Prashant Jain

Prashant K Jain

Section Head, Advanced Reactor Engineering & Development, Nuclear Energy and Fuel Cycle Division

Contact

865.574.6272 | JAINPK@ORNL.GOV

Bio

Dr. Prashant Jain is a Distinguished R&D staff and a Line and Program leader in Oak Ridge National Laboratory’s nuclear energy enterprise, serving as Section Head for the Advanced Reactor Engineering & Development (ARED) Section within the Nuclear Energy and Fuel Cycle Division. Under his leadership, the section advances mission-critical capabilities to improve the safety, security, performance, construction, operation, maintenance, and integration of nuclear energy systems. The section’s work supports advanced reactor de-risking through innovative design, modeling, simulation, and prototype demonstrations; strengthens risk-informed decision-making, compliance, and capacity building; and expands digital-twin capabilities for fission, fusion, and broader energy systems through instrumentation and controls, data integration, and predictive models. 

With more than two decades of experience, Dr. Jain combines deep technical expertise with demonstrated leadership in building programs, developing teams, and engaging national sponsors. His technical contributions span computational fluid dynamics, multiphysics modeling, nuclear thermal design and safety analysis, artificial intelligence and machine learning for digital twins, safety-security-safeguards (3S) integration, and parallel scientific software development.

Dr. Jain also serves as National Pillar Lead for Engineering and Technology Solutions within the National Nuclear Security Administration (NNSA)’s Office of International Nuclear Security (INS) portfolio. In this role, he helps coordinate a multi-laboratory research portfolio of approximately $10 million involving ORNL, Sandia National Laboratories, Idaho National Laboratory, Pacific Northwest National Laboratory, Argonne National Laboratory, Savannah River National Laboratory, and other partners. 

Dr. Jain is an Executive Member of the American Nuclear Society’s Operations and Power Division and serves on the Program Committee of the ANS Thermal Hydraulics Division. He also serves on the advisory boards of North Carolina State University’s Center for Nuclear Energy Facilities and Structures and the University of Michigan’s Department of Nuclear Engineering and Radiological Sciences. He is also a national technical reviewer for the DOE Office of Nuclear Energy’s Gateway for Accelerated Innovation in Nuclear Engineering (GAIN) Program. 

He has held editorial leadership roles for leading nuclear and energy research publications, including guest editor for a Nuclear Engineering and Design special issue on outcomes from Researchers Orienting the Future of Nuclear Fission Technology, associate editor for a Frontiers in Energy Research special issue on digital twins for nuclear assets, and associate editor for an Applied Sciences special issue on CFD analysis for nuclear engineering. Dr. Jain received the American Nuclear Society Mark Mills Award for his doctoral research on lattice Boltzmann methods and UT-Battelle’s 2019 Mission Support Award for his contributions to the HFIR event causal analysis.

Professional Experience

Section Head (2022–Present), Advanced Reactor Engineering & Development, Nuclear Energy & Fuel Cycle Division, ORNL

  • Responsible for providing line management and technical leadership for 50+ research and technical staff in the Advanced Reactor Engineering & Development Section at ORNL to pursue scientific and technical innovations. 
  • Connected technical excellence with sponsor needs by translating emerging R&D capabilities into fundable program concepts in advanced reactors, digital twins, AI/ML, nuclear security, safeguards, and clean-energy integration.
  • Developed leaders by mentoring Group Leaders, principal investigators, early-career staff, postdoctoral researchers, and staff while pursuing opportunities for their promotion, award, and other service recognitions.
  • Established and matured monthly crosscut forums that brought staff together for technical lightning talks, strategic updates, sponsor context, and group-level capability sharing.
  • Created recurring monthly highlights processes to capture staff accomplishments and support reporting to division and directorate leadership.
  • Built a central OneDrive repository for group leaders containing policies, strategic plans, contacts, job postings, organizational charts, budgets, program data, presentation materials, and procedural guidance.
  • Instituted quarterly project portfolio updates and real-time proposal tracking to improve visibility across more than 150 projects and numerous proposals to support leadership oversight.
  • Maintained opportunity awareness by communicating FOAs, internal calls, and sponsor priorities to group leaders and staff. Used red-team style review to improve proposal quality, technical clarity, schedule realism, sponsor relevance, and final competitiveness.
  • Created and led the NEFCD Programmatic Opportunities Bootcamp, an annual two-day workshop connecting staff and leaders with priorities and expectations across DOE NE, NNSA, DOE Office of Science, CMEI, Department of War, Department of State, and other sponsors.
  • Strengthened organizational culture (morale, performance, and funding stability) through predictable communication rhythms, transparent decision-making, in-person crosscut forums, staff recognition, and inclusive access to proposal and program-development knowledge.

National Pillar Lead (2024–Present), Engineering and Technology Solutions (ETS) Pillar, Analytics and Innovation Program within the NNSA Office of International Nuclear Security (INS)

  • Lead and coordinate a multi-laboratory security research portfolio of approximately $10 million involving ORNL, Sandia National Laboratories, Idaho National Laboratory, Pacific Northwest National Laboratory, Argonne National Laboratory, Savannah River National Laboratory, and other partners. 
  • Provide leadership advisory support to the INS headquarters in form of technical judgment, sponsor sensitivity, cross-lab coordination, proposal review, deliverable alignment, and strategic portfolio management.
  • Expand the INSTAR (International Nuclear Security for Advanced Reactors) program’s partnerships and engagement with industry through continuing outreach. Sustain and support engagement with the existing advanced reactor industry partners. 
  • Lead and support development of programmatic briefing materials for INSTAR and the ETS Pillar.

Group Leader (2020–22), Thermal-Hydraulics Group, Nuclear Energy & Fuel Cycle Division, ORNL

  • Led a cohesive R&D strategy for CFD and multiphysics capabilities, supported HFIR LEU conversion, strengthened sponsor relationships with RRD and NNSA M3, led and contributed to competitive proposals, and maintained a strong technical publication record. Provided direct staff mentorship, ensured safe and secure work practices, and positioned the group for continued growth in digital twins, nuclear thermal hydraulics, hydrogen-related modeling, and industrial decarbonization applications.

Thermal-Hydraulics Team Lead (2018–20), Advanced Reactor Engineering Group, Reactor and Nuclear Systems Division, ORNL

  • Established multi-physics research capabilities for nuclear applications to benefit from advancement in high-performance computing technologies. Led and supervised a team of staff scientists, engineers, and postdoctoral candidates to advance research in CFD and nuclear systems safety analysis. Successfully expanded existing research efforts and assisted the group leader in recruiting a high-quality, diverse pool of qualified candidates for the team.

Nuclear Computational Fluid Dynamics Engineer (2012–18), Thermal Hydraulics and Irradiation Engineering Group, Reactor and Nuclear Systems Division, ORNL

  • Led the development of advanced multi-physics modeling and simulation capabilities for the HFIR low-enriched uranium conversion project under the DOE National Nuclear Security Administration Office of Material Management and Minimization.
  • Served as an independent safety reviewer for the Plutonium-238 production program sponsored by the National Aeronautics and Space Administration. 
  • Responsible for performing independent safety reviews for the low-flow qualification of HFIR beam tubes and numerous other material irradiation tests and experiments using advanced CFD simulations.
  • Supported proposal and program development activities for the ORNL seed money and laboratory-directed R&D programs, nuclear energy advanced modeling and simulation program, nuclear regulatory commission, advanced manufacturing office, nuclear energy university program, nuclear safety research and development program, and high-performance computing for manufacturing program.
  • Supported the development of a high-temperature capable centrifugal pump technology for molten salt reactors through advanced CFD simulations. 

Postdoctoral Research Associate (2010–12), Thermal Hydraulics and Irradiation Engineering Group, Reactor and Nuclear Systems Division, ORNL

  • Led the development of an ORNL lattice Boltzmann method code, PRATHAM, Parallel Thermal Hydraulics using Advanced Mesoscopic Methods.
  • Led the development of a parallel Cartesian mesh generator code, CartGen++, for high-performance computing applications. 
  • Supported DOE Fukushima accident analysis efforts using exploratory hydrogen explosion simulations through time-dependent, explicit finite element methods in LS-DYNA and computational fluid dynamics simulations using COMSOL Multiphysics and STAR-CCM+.
  • Developed and published infinite-series exact analytical solutions for a variety of multi-layer heat conduction problems.

Summer Research Internships (2006–09)

  • Idaho National Laboratory (2008, 2009)
    • Supported developing an advanced utility toolkit to enable multi-variable couplings between different neutronics and thermal-hydraulics code systems.
  • Argonne National Laboratory (2007)
    • Guest graduate appointment to collaborate on developing an advanced multiphase lattice Boltzmann code package.
  • Oak Ridge National Laboratory (2006)
    • Coupled ATHENA (Advanced Thermal Hydraulic Energy Network Analyzer) code with the National Institute of Standards and Technology Reference Property Database to include cryogenic and other fluid properties.

Graduate Research Assistant (2004–10), Nuclear Plasma and Radiological Engineering, University of Illinois, Urbana-Champaign

  • Developed a parallel two-phase dynamics simulation toolkit using the lattice Boltzmann method to improve fundamental understanding of boiling water reactor applications.
  • Developed a flow-stability analysis code to predict flow instabilities in a natural circulation loop with supercritical water and CO2 fluids. 

Awards

  • Invited Panelist for the VaiBhaV Summit (2020)
    • Invited to participate in the Government of India’s Vaishwik Bharatiya Vaigyanik (VaiBhaV) Summit, which was a collaborative initiative by S&T and Academic Organizations of India, to bring out the comprehensive roadmap to leverage the expertise and knowledge of global Indian researchers for solving emerging challenges.
  • UT-Battelle Mission Support Award (2019)
    • For outstanding performance and dedication in determining the causes of the first fuel element failure in 52 years of HFIR operation. 
  • ORNL Significant Event Award (2012)
    • Nuclear Science and Engineering Directorate at ORNL conferred this award to recognize significant project accomplishments in developing Plutonium-238 production capabilities at the High Flux Isotope Reactor.
  • COMSOL Best Paper Award (2012)
    • Paper on design and safety basis simulations for Pu-238 bare pellet irradiation was selected as the best paper for COMSOL’s annual conference in Boston in 2012.
  • ORNL Significant Event Award (2011)
    • Reactor and Nuclear Systems Division at ORNL conferred this award in recognition of significant contributions to the support of DOE in response to the nuclear crisis at Fukushima.
  • ORNL Appreciation Award (2011)
    • Reactor and Nuclear Systems Division at ORNL conferred this award to recognize and appreciate my substantial role in computational analysis activities related to the ORNL’s response to the events at Fukushima Daiichi.
  • American Nuclear Society – Mark Mills Award (2010)
    • This is a national award given each year by the American Nuclear Society (ANS) to recognize a graduate student author who submits the best original technical paper contributing to advancing science and engineering related to the atomic nucleus.
  • Member of the Alpha Nu Sigma National Honor Society (2006)
  • Sargent and Lundy Fellowship (2005–06)

Education

  • PhD, Nuclear Engineering, University of Illinois, Urbana-Champaign (2006-10)
  • MS, Nuclear Engineering, University of Illinois, Urbana-Champaign (2004-06)
  • Bachelor of Technology (BTech), Mechanical Engineering, Indian Institute of Technology, Bombay, India (2000-04)

Professional Service

  • Permanent Member of the Advisory Board of the Nuclear Engineering and Radiological Sciences at the University of Michigan (NERS). 
  • Program Committee of the COMSOL Conference 2024, Boston, USA. 
  • Organizing Committee of the 31st International Conference on Nuclear Engineering, Prague, Czech Republic, Aug. 2024. 
  • LDRD Institutional Review Committee for Fusion and Fission Sciences and Engineering Directorate.
  • Organizing Committee of the 1st Atoms for Humanity Symposium at Purdue University, Oct. 2023. 
  • Guest Editor for the Nuclear Engineering and Design Journal’s Special Issue on Outcomes and Achievements from Researchers Orienting the Future of Nuclear Fission Technology.
  • Associate Editor for the Frontiers in Energy Research (Nuclear Energy)’ Special Issue on Shaping the Future of Nuclear Assets with Digital Twins.
  • Associate Editor for the Applied Sciences’ Special Issue on CFD Analysis for Nuclear Engineering.
  • Member of the American Nuclear Society (ANS), since 2006.
    • Thermal-Hydraulics, and Mathematics and Computations Divisions. 
    • Session Organizer and Session Chair for ANS annual meetings.
    • Member of the Program Committee for the ANS Thermal Hydraulics Division, since 2022. 
    • Member of the American Society of Mechanical Engineers.
  • Panelist for the National Science Foundation GRFP Program.
  • Technical reviewer for: 
    • International Journal of Heat and Mass Transfer
    • International Journal of Thermal Sciences
    • Nuclear Engineering and Design
    • Journal of Nuclear Technology
    • Annals of Nuclear Energy
    • ASME/JSME 8th Thermal Engineering Joint Conference
    • Journal of Advances in Engineering Education
    • U.S. Dept of Energy – Nuclear Energy University Program 
    • U.S. Dept of Energy – Small Business Innovation Research Program
  • ORNL Innovation Crossroads Program.

Professional Affiliations

  • Led successful research proposals for: 
    • DOE NNSA – Material Management and Minimization (M3) Program Office
    • DOE NE – NEAMS High-Impact Problem Research and NEUP Programs
    • DOE – Advanced Research Projects Agency (ARPA-E) Program
    • DOE – EERE High-Performance Computing for Manufacturing Program
    • U.S. Nuclear Regulatory Commission – Office of Nuclear Regulatory Research
    • ORNL – Seed Money Program
    • ORNL – Lab-directed Research and Development Program
    • NRC – Assessment of Digital Twins for Advanced Reactors
  • Academic and research collaborations with:
    • Indian Institute of Technology, Bombay India
    • University of Illinois, Urbana-Champaign IL    
    • Kansas State University, Manhattan KS 
    • University of Michigan, Ann Arbor MI    
    • University of Tennessee, Knoxville TN
    • University of Missouri, Rolla MO
    • Texas A&M University, College Station TX
    • Virginia Commonwealth University, Richmond VA
    • Argonne National Laboratory, Lemont IL
    • Idaho National Laboratory, Idaho Falls ID
    • Institut Laue–Langevin (High-Flux Reactor), Grenoble, France
    • Technical University of Munich, Research Neutron Source (FRM II), Germany
    • Pacific Northwest National Laboratory
    • Savannah River National Laboratory 

Specialized Equipment

  • People and Culture Leader: Develops group leaders, principal investigators, early-career staff, postdoctoral researchers, and technical staff through mentoring, promotion support, recognition packages, transparent communication, and inclusive access to program-development knowledge.
  • Strategic Program Development: Translates emerging technical capabilities into sponsor-aligned program concepts in advanced power and research reactors, digital twins, AI/ML, nuclear security, safeguards, clean-energy integration, and advanced modeling and simulation.
  • Portfolio and Proposal Governance: Establish repeatable processes for opportunity tracking, quarterly project portfolio updates, monthly highlights, red-team style proposal review, budget alignment, and sponsor-ready reporting across 150+ projects and numerous proposals.
  • Sponsor and Stakeholder Engagement: Provides technical judgment, sponsor sensitivity, cross-lab coordination, deliverable alignment, and strategic portfolio management for national security and nuclear energy missions. 
  • Technical Credibility: Maintains expertise in CFD, multiphysics, advanced reactor systems, HFIR LEU conversion, digital twins, AI-enabled nuclear deployment, security by design, and high-temperature heat transfer.
  • Operational Discipline: Emphasizes safety, security, research integrity, SQA awareness, compliance, milestones, PEMP inputs, monthly highlights, and sponsor-ready documentation.
  • External Leadership: Serves on advisory boards, conference committees, special journal issues, ANS committees, and cross-laboratory technical teams that extend ORNL’s influence.
  • Experienced nuclear safety professional with a specific focus on advanced multi-physics software and technology for high-fidelity modeling and simulation of nuclear systems.
  • Expert in industry-leading computational fluid dynamics technologies, including COMSOL Multiphysics, STAR-CCM+, and ANSYS Workbench.
  • Expert in many programming and scripting languages, including Fortran 90, C, C++, Python, Perl, and MATLAB.
  • Expert in parallel programming paradigms, including Message Passing Interface – MPI, OpenMP, and knowledgeable in GPU-based code acceleration methods, CUDA, and OpenCL on leadership computing facilities.
  • Experience with other engineering tools and packages, including ATHENA, RELAP5, Pro-ENGINEER, SpaceClaim, LS-DYNA, MATLAB, Mathematica, VisIt, ParaView, and Tecplot.

Trademarks and Patents

  • H. Bindra, J. Matulis, B. Sieh, N. See, and P.K. Jain, "Reactor Core System," A Non-Provisional Patent Application, 70304-02, filed, 2024. 
  • E. Lara-Curzio, C.L. Cramer, A.M. Elliott, B.A. Fricke, P.K. Jain, R.R. Lowden, K. Nawaz, V.M. Rao, and M.J. Sandlin, "Compliant Heat Exchangers, Heat Pipes and Methods for Making Same," US Patent No. US11633789B2, 2021.
  • Invention Disclosure ID# 202305464, Advanced entrainment ducts for high entrainment flows, from HPC4EI collaboration with Spar Energy.
  • Invention Disclosure ID# 202405757, Direct-Contact Heat Exchanger with Refrigerant Loop in Natural Convection and Supercritical Flow for Sensible Waste Heat Recovery, with V. Rao, M. Delchini, and K. Nawaz.

Publications

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Other Publications

Publications: Book and Journal Articles

  1. C. Bojanowski, …, P. Jain, C. Reiter, and J. Licht, "Assessing the Heat Transfer Modeling Capabilities of CFD Software for Involute-Shaped Plate Research Reactors," Energies 2025, 18(14), 3692; https://doi.org/10.3390/en18143692.
  2. C.L. Cramer, E. Lara-Curzio, A.M. Elliott, T.G. Aguirre, B. Yoon, B. Fricke, V.M. Rao, P.K. Jain, and K. Nawaz, "Material Selection and Manufacturing for High-Temperature Heat Exchangers: Review of State-Of-The-Art Development, Opportunities and Challenges," The International Journal of Ceramic Engineering and Science, 2024.
  3. C. Daniel, P.K. Jain, et al., "Advanced Research Directions on AI for Energy," Report on Winter 2023 Workshops, ANL-23/69, available from: https://www.anl.gov/ai/reference/ai-for-energy-report-2024, 2024.
  4. K. Mondal, O. Martinez, and P.K. Jain, "Advanced Manufacturing and Digital Twin Technology for Nuclear Energy," Front. Energy Res.,12:1339836, 2024.
  5. N.S. Panicker, G. Bazaz, V.M. Rao, S. Natesh, and P.K. Jain, "Novel designs for ejector-based systems for enhanced fluid recovery verified through CFD Simulations," International Journal of Mechanical Engineering and Technology (IJMET), Volume 14, Issue 06, pp. 23-36. Article ID: IJMET_14_06_004, 2023.
  6. D.J. Kropaczek, V. Badalassi, P.K. Jain, P. Ramuhalli, and W.D. Pointer, "Digital Twins for Nuclear Power Plants and Facilities," in The Digital Twin Technology, Business Models, Operations and Applications, Springer, Springer International Publishing, 2023.
  7. M. Sitek, P.K. Jain, et al., "Thermomechanical Analysis and Modeling of Involute-Shaped Fuel Plates Using the Cheverton-Kelley Experiments for the High Flux Isotope Reactor," Nuclear Engineering and Design, Volume 409, 112334, 2023.
  8. J. Weinmeister, C. Jesse, P.K. Jain, B.J. Ade, and D. Schappel, "Coolant Channel Design for Additively Manufactured Reactor Cores," Nuclear Science and Engineering, 196(12), 1496–1516, 2022.
  9. A. Wysocki, P.K. Jain, S. Bhatt, and J. Rader, " Analysis of Postulated Accident Scenarios for the Transformational Challenge Reactor, Nuclear Science and Engineering, 196(12), 1442–1463, 2022.
  10. Z. Ahmed, P.K. Jain, et al., "Experimental Investigation on the Coolability of Nuclear Reactor Debris Beds Using Seawater," International Journal of Heat & Mass Transfer, vol. 184, p. 122347, 2022.
  11. N.S. Panicker, R. Chaudhary, V.M. Rao, M.O. Delchini, and P.K. Jain, "High-Fidelity Simulation Study of the Aluminum Smelting Process Using OpenFOAM," Metallurgical and Materials Transactions B, vol. 53B, pp. 2407-2426, 2022.
  12. V.M. Rao, Vineet Kumar, A. Anderson, J. Grogan, and P.K. Jain, "Computational Methodology to Simulate Pyrometallurgical Processes in a Secondary Lead Furnace," in REWAS 2022: Developing Tomorrow’s Technical Cycles (Volume 1), The Minerals, Metals & Materials Series, 2022.
  13. B.J. Ade et al., "Candidate Core Designs for the Transformational Challenge Reactor," Journal of Nuclear Engineering, vol. 2, pp. 74-85, 2021.
  14. V. Kumar, M. Harvey, M. Wendel, P.K. Jain, and N.J. Evans, "Thermal Loading Analysis of the Ring Injection Dump for the Spallation Neutron Source Facility," Nuclear Inst. and Methods in Physics Research A, vol. 1006, p. 165380, 2021.
  15. B.R. Betzler, B.J. Ade, A.J. Wysocki, P.K. Jain, P.C. Chesser, M.S. Greenwood, and K.A. Terrani, "Transformational Challenge Reactor Preconceptual Core Design Studies," Nuclear Engineering and Design, vol. 367, p. 110781, 2020.
  16. M. Sandlin, K. Nawaz, B. Fricke, V.M. Rao, C. Cramer, E.L. Curzio, A. Elliott, and P.K. Jain, "An Overview of the Design of High-Temperature Heat Exchangers: State of the Art Developments and Prospects," Renewable and Sustainable Energy Reviews, submitted in 2020.
  17. D. Franken, D. Gould, P.K. Jain, and H. Bindra, "Numerical Study of Air Ingress Transition to Natural Circulation in a High-Temperature Helium Loop," Annals of Nuclear Energy, vol. 111, Jan. 2018.
  18. C.J. Hurt, J.D. Freels, P.K. Jain, and G.I. Maldonado, "Thermo-Mechanical Safety Analyses of Preliminary Design Experiments for Pu-238 Production," ASME Journal of Nuclear Engineering and Radiation Science, vol. 3, no. 2, 2017 (NERS-16-1069).
  19. C.J. Hurt, J.D. Freels, P.K. Jain, and G.I. Maldonado, "Thermo-Mechanical Safety Analyses for Pu-238 Production Target at the HFIR," ASME Journal of Nuclear Engineering and Radiation Science, vol. 3, no. 2, 2017 (NERS-16-1070).
  20. S. Singh, P.K. Jain, and Rizwan-uddin, "Analytical Solution for Three-Dimensional, Unsteady Heat Conduction in a Multilayer Sphere," Journal of Heat Transfer, vol. 138, p. 101301, Oct. 2016.
  21. D. Wang, I.C. Gauld, G.L. Yoder, L.J. Ott, G.F. Flanagan, M.W. Francis, E.L. Popov, J.J. Carbajo, P.K. Jain, J.C. Wagner, and J.C. Gehin, "Study of Fukushima Daiichi Nuclear Power Station Unit-4 Spent Fuel Pool," Nuclear Technology, vol. 180, no. 2, pp. 205-215, 2012.
  22. S. Singh, P.K. Jain, and Rizwan-uddin, "Finite Integral Transform Method to Solve Asymmetric Heat Conduction in a Multilayer Annulus with Time-Dependent Boundary Conditions," Nuclear Engineering and Design, vol. 83, no. 2, pp. 144-154, 2011.
  23. P.K. Jain, S. Singh, and Rizwan-uddin, "An Exact Analytical Solution for Two-Dimensional, Unsteady, Multilayer Heat Conduction in Spherical Coordinates," International Journal of Heat and Mass Transfer, vol. 53, no. 9-10, pp. 2133-2142, 2010.
  24. P.K. Jain, A. Tentner, and Rizwan-uddin, "A Lattice Boltzmann Framework to Simulate Boiling Water Reactor Core Hydrodynamics," Computers and Mathematics with Applications, vol. 58, no. 5, pp. 975-986, 2009.
  25. P.K. Jain, S. Singh, and Rizwan-uddin, "Analytical Solution to Transient Asymmetric Heat Conduction in a Multilayer Annulus," Journal of Heat Transfer, vol. 131, no. 1, pp. 011304(1-7), 2009.
  26. S. Singh, P.K. Jain, and Rizwan-uddin, "Analytical Solution to Transient Heat Conduction in Polar Coordinates with Multiple Layers in Radial Direction," International Journal of Thermal Sciences, vol. 47, no. 3, pp. 261-273, 2008.
  27. P.K. Jain and Rizwan-uddin, "Numerical Analysis of Supercritical Flow Instabilities in a Natural Circulation Loop," Nuclear Engineering and Design, vol. 238, no. 8, pp. 1947-1957, 2008.
  28. P.K. Jain, Y. Gu, and Rizwan-uddin, "Broadcasting Engineering Laboratories, Audio/Video, and Data, in Real-Time over the Internet," Advances in Engineering Education, vol. 1, no. 2, pp. 1-17, 2008.

Publications: Technical Proceedings

  1. M. Ross, P.K. Jain, "Multiphysics Modeling in COMSOL to Understand Thermal Behavior of the High Flux Isotope Reactor Core with a Low-enriched Uranium Silicide Fuel," COMSOL Conference 2024, Boston MA, October 2-4, 2024.
  2. C.W. Sizemore, et al., "High Flux Isotope Reactor Low-Enriched Uranium Conversion Activities – 2024 Status Update," presented at the U.S. High-Performance Research Reactor (USHPRR) Project Update Meeting, Augusta, Georgia, Jun. 25-27, 2024.
  3. P.K. Jain, K. Borowiec, E.L. Popov, and C. Sizemore, "Involute Working Group: Updates from HFIR on Verification and Validation of CFD to support LEU Fuel Conversion," presented at the European Research Reactor Conference (RRFM) 2024, Warsaw, Poland, Apr. 21-24, 2024.
  4. C.W. Sizemore, et al., "High Flux Isotope Reactor Low-Enriched Uranium Conversion Project Overview," in Proceedings of the European Research Reactor Conference (RRFM) 2024, Warsaw, Poland, Apr. 21-24, 2024.
  5. C.W. Sizemore, et al., "Fuel Conversion Efforts at the High Flux Isotope Reactor – a 2023 Status Update," in Proceedings of the 2023 ANS Annual Winter Meeting, Washington D.C., Nov. 12-15, 2023.
  6. C.W. Sizemore, et al., "High Flux Isotope Reactor Low-Enriched Uranium Conversion Activities –RERTR 2023," presented at the RERTR-2023: International Meeting on Reduced Enrichment for Research and Test Reactors, Denver, Colorado, Nov. 5-8, 2023.
  7. P.K. Jain, "COMSOL Results for the Proposed LEU Silicide Fuel Designs under 95 MW Nominal Conditions for HFIR Conversion," presented at the RERTR-2023: International Meeting on Reduced Enrichment for Research and Test Reactors, Denver, Colorado, Nov. 5-8, 2023.
  8. P.K. Jain, M. Sitek, "Multiphysics Modeling Results for the High Flux Isotope Reactor to Support its LEU Conversion," presented at the COMSOL Conference 2023, Munich, Oct. 25-27, 2023.
  9. P.K. Jain, "COMSOL Multiphysics Modeling Results for the Low-Enriched Uranium-Silicide Conversion of the High Flux Isotope Reactor," lightening talk presented at the 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-20), Washington DC, Aug. 20–25, 2023.
  10. B. Sieh, H. Bindra, P.K. Jain, C. Petrie, and N. See, "Air Ingress and DLOFC Studies in Scaled HTGR Geometry Using Additively Manufactured TCR Fuel Elements," In Proceedings of the 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-20), Washington DC, USA, Aug. 20–25, 2023.
  11. V.M. Rao, P.K. Jain, K. Nawaz, and E.L. Curzio, "A Triply-Periodic Minimal Surface Recuperator for Natural Gas Combustion Systems," ASME 2023 Power Conference (POWER-2023), Aug. 2023.
  12. V. Yadav, V. Agarwal, P.K. Jain, P. Ramuhalli, X. Zhao, C. Ulmer, J. Carlson, D. Eskins, and R. Iyengar, "Technical Challenges and Gaps in Integration of Advanced Sensors, Instrumentation, and Communication Technologies with Digital Twins for Nuclear Application," in Proceedings of the 13th International Topical Meeting on Nuclear Plant Instrumentation, Control and Human-Machine Interface Technologies (NPIC&HMIT 2023), Knoxville, Tennessee, Jul. 2023.
  13. C.W. Sizemore, P.K. Jain, et al., "High Flux Isotope Reactor Low-Enriched Uranium Conversion Activities – 2023 Status Update," 2023 U.S. High-Performance Research Reactor (USHPRR) Project Update Meeting, Corvallis, Oregon, Jun. 2023. 
  14. P.K. Jain, "Opportunities for Digital Twins to Define the Future of Nuclear Energy Systems," Panel Presentation at the 2023 ANS Annual Meeting, Indianapolis, USA, Jun. 2023. 
  15. D. Chandler, P.K. Jain, et al., "Brief Overview of Reactor Core Design, Modeling, and Simulation Capabilities," Slicer Users Group, Knoxville, Tennessee, May 2023. 
  16. P.K. Jain, "Advancing the Science & Technology to Accelerate the Deployment of Advanced Reactors," presented at the CARD 2023: Conference for Advanced Reactor Deployment, College Station, Texas, Feb. 2023.
  17. P.K. Jain, and S. Nelson, "Security-by-Design Approach to Reduce the Insider Threat and Sabotage Risks for Small Modular Reactors (SMRs)," Presentation to International Nuclear Security Sponsors and Stakeholders, Jan. 2023.
  18.  C.W. Sizemore, P.K. Jain, et al., "High Flux Isotope Reactor Low-Enriched Uranium Conversion Activities – 2022 Status Update," In Proceedings of the Reduced Enrichment Research and Test Reactor (RERTR) Conference, Vienna, Austria, Oct. 2022.
  19. A. Bergeron, P.K. Jain, et al., "Updates from the Involute Working Group," presented at the European Research Reactors Conference (RRFM) 2022, Budapest, Hungary, Jun. 2022.
  20. B.J. Ade et al., "Transformational Challenge Reactor Design Characteristics," presented at the International Conference on Physics of Reactors 2022 (PHYSOR 2022), Pittsburgh, PA, USA, May 15-20, 2022.
  21. N.S. Panicker, R. Chaudhary, M.O. Delchini, V.M. Rao, and P.K. Jain, "Large Eddy Simulation Study of Aluminum Smelting Process using OpenFOAM," presented at the 7th Thermal and Fluids Engineering Conference (Hybrid), University of Nevada, Las Vegas, NV, USA, May 16-18, 2022.
  22. P.K. Jain, J. Weinmeister, and B.J. Ade, "CFD Modeling for the Transformational Challenge Reactor Preliminary Design," presented at the International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-19), Virtual Meeting, Mar. 6-11, 2022.
  23. I. Jarrah, M.O. Delchini, V. Badalassi, P.K. Jain, and J. Gounley, "Implementation of the Energy Equation Solver to the Lattice Boltzmann Method-based Code PRATHAM," presented at the International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-19), Virtual Meeting, Mar. 6-11, 2022.
  24. J. Weinmeister, A.S. Sabau, and P.K. Jain, "Additively Manufactured Surface Heat Transfer Enhancements for the Transformational Challenge Reactor," to be presented at the International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-19), Virtual Meeting, Mar. 6-11, 2022.
  25. V.M. Rao, V. Kumar, A. Anderson, J. Grogan, and P.K. Jain, "Computational Methodology to Simulate Pyrometallurgical Processes in a Secondary Lead Furnace," to be presented at the REWAS 2022 Symposia, TMS 2022 Annual Meeting & Exhibition, Anaheim, CA, USA, Feb. 27-Mar. 3, 2022.
  26. C.J. Jesse, J. Weinmeister, P.K. Jain, and B.J. Ade, "Flattening the Radial Temperature Profile across the Transformational Challenge Reactor Core," presented at the Transactions of 2021 ANS Winter Meeting and Technology Expo, Washington, DC, USA, Nov. 2021.
  27. B.J. Ade, P.K. Jain, J. Weinmeister, and B.R. Betzler, "The Impact of Temperature Modeling Assumptions for the Transformational Challenge Reactor," presented at the Transactions of 2021 ANS Annual Meeting, Jun. 13-16, 2021.
  28. P.K. Jain and N. See, "Advanced CFD and Multiphysics Design Exploration at ORNL," presented at Siemens’ Digital Twin Conference for the US Dept of Energy, Apr. 21, 2021.
  29. D. Chandler, J.L. Meszaros, B.R. Betzler, J.W. Bae, D.H. Cook, V.D. Fudurich, T. Howard, C.J. Hurt, G. Ilas, P.K. Jain, and E.L. Popov, "Fuel Conversion Efforts at the High Flux Isotope Reactor–a 2020 Status Update," presented at the Transactions of 2020 ANS Winter Meeting and Nuclear Technology Expo, Nov. 2020.
  30. A. Wysocki, P.K. Jain, and J. Rader, "Transformational Challenge Reactor Accident Analysis," presented at the Transactions of 2020 ANS Winter Meeting and Nuclear Technology Expo, Nov. 2020.
  31. J. Weinmeister, C.J. Jesse, and P.K. Jain, "Gas Coolant Channel Optimization for Transformational Challenge Reactor," presented at the Transactions of 2020 ANS Winter Meeting and Nuclear Technology Expo, Nov. 2020.
  32. V.M. Rao, M. Delchini, P.K. Jain, and M.T. Ahmad, "HPC to Enable Next-generation Low-temperature Waste Heat Recovery," presented at the Proceedings of the 2020 28th Conference on Nuclear Engineering, ICONE28-POWER2020, Anaheim, CA, USA, Aug. 2-6, 2020.
  33. J. Weinmeister and P.K. Jain, "Cooling Channel Optimization in Additively Manufactured Gas-Cooled Reactor Core," presented at the Transactions of American Nuclear Society Annual Meeting, Jun. 2020.
  34. P.K. Jain, "Challenges and Opportunities in Thermal Hydraulics of High-Temperature Gas-Cooled Reactors," presented at the Transactions of American Nuclear Society Annual Meeting, Jun. 2020.
  35. B. Betzler, B. Ade, A. Wysocki, P.K. Jain, S. Greenwood, J. Rader, J. Heineman, R. Kile, N. Brown, and K. Terrani, "Power Level Down-Selection for the Transformational Challenge Reactor," presented at the Transactions of American Nuclear Society Annual Meeting, Jun. 2020.
  36. N.S. Panicker, M. Delchini, T. Sambor, A.S. Sabau, and P.K. Jain, "Advanced Thermal-Hydraulic Model of Heat Recovery Steam Generators," presented at the 5th Thermal and Fluids Engineering Conference (TFEC), May 26-28, 2020.
  37. P.K. Jain, "Thermal-Hydraulics Modeling and Simulation Capabilities for Advanced Reactor Design and Safety Evaluations," presented at the 2019 Global Center for Nuclear Energy Partnership (GCNEP) Working Group Meeting, Dec. 2019.
  38. P.K. Jain, "An Overview of Research on Molten Salt Reactors," presented at the 2019 Global Center for Nuclear Energy Partnership (GCNEP) Working Group Meeting, Dec. 2019.
  39. D. Chandler, B.R. Betzler, P.K. Jain, J.W. Bae, D.H. Cook, V.D. Fudurich, T.K. Howard, C.J. Hurt, G. Ilas, J.L. Meszaros, and E. Popov, "High Flux Isotope Reactor Conversion from High-Enriched to Low-Enriched Uranium Fuel – a 2019 Progress Update," presented at the Reduced Enrichment for Research and Test Reactors (RERTR) 2019 Meeting, Zagreb, Croatia, Oct. 6-9, 2019.
  40. T.K. Howard, P.K. Jain, and E.L. Popov, "Verification and Validation of COMSOL for Heat Transfer in Thin Rectangular Channels using NASA Test Results," presented at the 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, Portland, OR, USA, Aug. 18-23, 2019.
  41. P.K. Jain, "Renewed Emphasis on Advanced Modeling, Simulation, and Testing for the LEU Silicide Fuel in Response to the Recent HFIR Event," presented at the U.S. High-Performance Research Reactors (USHPRR) 2019 Meeting, Jul. 2019.
  42. P.K. Jain, "High-Performance Computing to Enable Next-generation Low-temperature Waste Heat Recovery," presented at the ORNL CRADA NFE-18-07223 Technical Review Presentation for the U.S. DOE Advanced Manufacturing Office Program Review Meeting, Washington, DC, USA, Jun. 11-12, 2019.
  43. V.M. Rao, M. Delchini, M.T. Kao, P.K. Jain, and S. Subramanian, "HPC to Enable Next-generation Low-temperature Waste Heat Recovery," presented at the U.S. DOE Advanced Manufacturing Office Program Review Meeting, Washington, DC, USA, Jun. 11-12, 2019.
  44. D. Renfro, B. Betzler, D. Chandler, D. Cook, V. Fudurich, C.J. Hurt, G. Ilas, P.K. Jain, and E. Popov, "Continuing LEU Conversion Activities at the High Flux Isotope Reactor," presented at the Reduced Enrichment for Research and Test Reactors (RERTR) 2018 Meeting, Edinburgh, U.K., Nov. 4-7, 2018.
  45. P.K. Jain, "Improving Nuclear Safety Through Multiphysics Modeling and Simulations," presented at the COMSOL Conference 2018, Boston, MA, USA, Oct. 3-5, 2018.
  46. D. Renfro et al., "Continuing LEU Conversion Activities at the High Flux Isotope Reactor," presented at the Transactions of Reduced Enrichment for Research and Test Reactors (RERTR 2017) Meeting, Chicago, IL, USA, Nov. 12-16, 2017.
  47. P.K. Jain, J.D. Freels, D.H. Cook, E.L. Popov, and D.G. Renfro, "Advanced Multiphysics Computational Fluid Dynamics Models for the High Flux Isotope Reactor," presented at the Proceedings of RRFM-2017 (European Research Reactor Conference), Rotterdam, Netherlands, May 14-18, 2017.
  48. J.J. Carbajo and P.K. Jain, "Comparison of HFIR Core Hydraulic Models with Operational Data," presented at the Transactions of ANS Winter Meeting, Las Vegas, NV, USA, Nov. 6-10, 2016.
  49. D. Renfro et al., "Continuing LEU Conversion Activities at the High Flux Isotope Reactor," presented at the Transactions of Reduced Enrichment for Research and Test Reactors (RERTR 2016) Meeting, Antwerp, Belgium, Oct. 23-26, 2016.
  50. D. Renfro et al., "Continuing LEU Conversion Activities at the High Flux Isotope Reactor," presented at the U.S. High-Performance Research Reactors (USHPRR) Working Group Meeting, Gaithersburg, MD, USA, Jul. 2016.
  51. P.K. Jain and J.D. Freels, "Advanced Multiphysics Thermal-Hydraulic Models for the High Flux Isotope Reactor," presented at the Transactions of the COMSOL 2015 Conference, Boston, MA, USA, Oct. 2015.
  52. D. Renfro et al., "Continuing LEU Conversion Activities at the High Flux Isotope Reactor," presented at the Transactions of Reduced Enrichment for Research and Test Reactors (RERTR 2015) Meeting, Seoul, South Korea, Oct. 2015.
  53. P.K. Jain and J.D. Freels, "Advanced Multiphysics Thermal-Hydraulic Models for the High Flux Isotope Reactor," presented at the Nuclear Reactor Thermal Hydraulics (NURETH-16) Conference, Chicago, IL, USA, Sep. 2015.
  54. P.K. Jain, "Learn from COMSOL Multiphysics: 25 must-have User-Centric Features for Any Engineering Analysis Software," presented at the ORNL RNSD M&S Forum, Jul. 2015.
  55. D. Renfro et al., "Continuing LEU Conversion Activities at the High Flux Isotope Reactor," presented at the U.S. High-Performance Research Reactors (USHPRR) Working Group Meeting, Argonne, IL, USA, Jun. 2015.
  56. P.K. Jain and J.D. Freels, "3D Multi-Physics Analyses to Support Low Enriched Uranium (LEU) Conversion of HFIR," presented at the Transactions of the 2014 COMSOL Conference, Boston, MA, USA, Oct. 2014.
  57. D. Renfro et al., "Continuing LEU Conversion Activities at the High Flux Isotope Reactor," presented at the U.S. High-Performance Research Reactors (USHPRR) Working Group Meeting, Richland, WA, USA, Jul. 2014.
  58. V.B. Khane and P.K. Jain, "Steady State COMSOL Thermal-Hydraulics Models for ORNL’s High Flux Isotope Reactor," presented at the 2013 ANS Winter Meeting and Nuclear Technology Expo, Washington, DC, USA, Nov. 10-14, 2013.
  59. J.D. Freels, P.K. Jain, and C.J. Hurt, "Investigation of Thermal Contact Gas Gap Conductance using COMSOL Version 4.3b," presented at the 2013 COMSOL Conference, Boston, MA, USA, Oct. 9-11, 2013.
  60. D. Wang, P.K. Jain, and J.D. Freels, "Application of COMSOL Pipe Flow Module to Develop a High Flux Isotope Reactor (HFIR) System Loop Model," presented at the 2013 COMSOL Conference, Boston, MA, USA, Oct. 9-11, 2013.
  61. A.S. Joshi, P.K. Jain, J.A. Mudrich, and E.L. Popov, "PRATHAM: Parallel Thermal Hydraulics Simulations using Advanced Mesoscopic Methods," presented at the 2012 ANS Winter Meeting and Nuclear Technology Expo, San Diego, CA, USA, Nov. 11-15, 2012.
  62. J.N. Cantrell, E.J. Inclan, A.S. Joshi, E.L. Popov, and P.K. Jain, "CartGen++: Extending a CAD-Based Cartesian Mesh Generator for the Lattice Boltzmann Method," presented at the 2012 ANS Winter Meeting and Nuclear Technology Expo, San Diego, CA, USA, Nov. 11-15, 2012.
  63. V.B. Khane, P.K. Jain, and J.D. Freels, "Development of CFD Models to Support LEU Conversion of ORNL’s High Flux Isotope Reactor," presented at the 2012 ANS Winter Meeting and Nuclear Technology Expo, San Diego, CA, USA, Nov. 11-15, 2012.
  64. V.B. Khane, P.K. Jain, and J.D. Freels, "COMSOL Simulations for Steady-State Thermal Hydraulics Analyses of ORNL’s High Flux Isotope Reactor," presented at the COMSOL Conference, Newton, MA, USA, Oct. 3-5, 2012.
  65. J.D. Freels, P.K. Jain, and R.W. Hobbs, "Design and Nuclear Safety Related Simulations of Bare-Pellet Test Irradiations for the Production of Pu-238 in the High Flux Isotope Reactor using COMSOL," presented at the COMSOL Conference, Newton, MA, USA, Oct. 3-5, 2012.
  66. J.D. Freels and P.K. Jain, "Multiphysics Simulations in the Complex 3D Geometry of the High Flux Isotope Reactor Fuel Elements Using COMSOL," presented at the COMSOL Conference, Newton, MA, USA, Oct. 13-15, 2011.
  67. P.K. Jain, J.D. Freels, and D.H. Cook, "COMSOL-based Multiphysics Simulations to Support HFIR’s Conversion to LEU Fuel," presented at the Trans. Amer. Nucl. Soc., vol. 104, pp. 1064-1066, 2011.
  68. P.K. Jain and Rizwan-uddin, "Artificial Interface Lattice Boltzmann (AILB) Model for Simulation of Two-Phase Dynamics," presented at the 2010 American Nuclear Society (ANS) Winter Meeting, Las Vegas, NV, USA, Nov. 7-11, 2010.
  69. P.K. Jain, E.L. Popov, G.L. Yoder, and Rizwan-Uddin, "Parallel Simulation of 2D/3D Flows using Lattice Boltzmann Models (LBM)," presented at the 2010 American Nuclear Society (ANS) Winter Meeting, Las Vegas, NV, USA, Nov. 7-11, 2010.
  70. P.K. Jain and Rizwan-uddin, "Advances in Lattice Boltzmann Modeling (LBM) to Simulate Two-Phase Dynamics," presented at the 1st International Nuclear & Renewable Energy Conference (INREC-10), Amman, Jordan, Mar. 21-24, 2010.
  71. S. Singh, P.K. Jain, and Rizwan-uddin, "Analytical Solution of Time-Dependent Multilayer Heat Conduction Problems for Nuclear Applications," presented at the 1st International Nuclear & Renewable Energy Conference (INREC-10), Amman, Jordan, Mar. 21-24, 2010.
  72. P.K. Jain, A. Tentner, and Rizwan-uddin, "LBM Simulation of Liquid Drop Coalescence driven by Surface Tension," presented at the 2009 American Nuclear Society (ANS) Winter Meeting, Washington, DC, USA, Nov. 15-19, 2009.
  73. P.K. Jain, A. Tentner, and Rizwan-uddin, "A Lattice Boltzmann Framework for the Simulation of Boiling Hydrodynamics in BWRs," presented at the 2008 American Nuclear Society (ANS) Annual Meeting, Anaheim, CA, USA, Jun. 8-12, 2008.
  74. P.K. Jain and Rizwan-uddin, "A 3D, Parallel LBM to Simulate Gravity driven Bubbly and Slug Flows," presented at the 2007 American Nuclear Society (ANS) Winter Meeting, Washington, DC, USA, Nov. 11-15, 2007.
  75. P.K. Jain and Rizwan-uddin, "Lattice Boltzmann Method (LBM) for Nuclear Engineering Applications," presented at the 2007 American Nuclear Society (ANS) Annual Meeting, Boston, MA, USA, Jun. 24-28, 2007.
  76. P.K. Jain, S. Markidis, B.G. Jones, Rizwan-uddin, J.R. White, and L.M. Bobek, "Web-casting of Nuclear Reactor Experiments," presented at the American Nuclear Society (ANS) Winter Meeting, Albuquerque, NM, USA, Nov. 12-16, 2006.
  77. K.D. Kim, P.K. Jain, and Rizwan-uddin, "Web- and System-code-based, Interactive, Nuclear Power Plant Simulators," presented at the 5th International Topical Meeting on Nuclear Plant Instrumentation Controls, and Human Machine Interface Technology (NPIC & HMIT 2006), Albuquerque, NM, USA, Nov. 12-16, 2006.
  78. P.K. Jain, J.F. Stubbins, and Rizwan-Uddin, "Interactive Virtual Laboratory for Distance Education in Nuclear Engineering," presented at the PHYSOR-2006, American Nuclear Society’s Topical Meeting on Reactor Physics, Vancouver, BC, Canada, Sep. 10-14, 2006.
  79. P.K. Jain and Rizwan-uddin, "Steady-State and Dynamic Analyses of Supercritical CO2 Natural Circulation Loop," presented at the ICONE-14, 14th International Conference on Nuclear Engineering, Miami, FL, USA, Jul. 17-20, 2006.
  80. P.K. Jain, Y. Gu, J.F. Stubbins, and Rizwan-Uddin, "Broadcasting Nuclear Engineering Laboratories – Video and Data – in Real-Time over the Internet," presented at the American Society of Engineering Education (ASEE) Annual Conference, Chicago, IL, USA, Jun. 18-21, 2006.
  81. E. Edwards, A. Sweet, M. Blanchard, R. Agasie, P.K. Jain, and Rizwan-Uddin, "Distance Reactor Laboratory and Virtual Tours," presented at the 2006 American Nuclear Society (ANS) Annual Meeting, Reno, NV, USA, Jun. 4-8, 2006.

Publications: Technical Reports

  1. L. Olson, P. Jain, et al., “Physical Security Risks and Vulnerabilities for Magnetic Confinement Fusion Devices,” ORNL TM 2025, 4140, September 2025.
  2. B. Hizoum, K. Borowiec, and P.K. Jain, "Estimating Fuel-Segregation and Non-bond Uncertainty Factors for HFIR HEU Fuel Plates using COMSOL Multiphysics," ORNL/TM-2024/3192, May 2024.
  3. B. Hizoum, K. Borowiec, and P.K. Jain, "Estimating Fuel-Segregation and Non-bond Uncertainty Factors for HFIR LEU Fuel Plates using COMSOL Multiphysics," ORNL/TM-2024/3193, May 2024.
  4. N.S. Panicker, V.M. Rao, G. Bazaz, and P.K. Jain, "Design and Development of a Waste Heat to Power Device using Computational Fluid Dynamics Simulations," ORNL/TM-2023/3114, Sep. 2023.
  5. S. Nelson, P.K. Jain, and A. Huning, "Security by Design: A Plant Design and Component–Based Approach to Technical Solutions to Insider and Outsider Threat," ORNL/TM-2023/2850, May 2023. 
  6. V. Yadav, V. Agarwal, P.K. Jain, P. Ramuhalli, X. Zhao, C. Ulmer, J. Carlson, D. Eskins, and R. Iyengar, " State-of-Technology and Technical Challenges in Advanced Sensors, Instrumentation, and Communication to Support Digital Twin for Nuclear Energy Application," INL/RPT-23 -70853, Feb. 2023.
  7. D. Chandler, and P.K. Jain, "FY2022 Review of Thermal Test Reactor Capabilities Functional Requirements and Preconceptual Core Designs," ORNL/TM-2022/2720, Jan. 2023. 
  8. R. Archibald, V. Badalassi, J. Canik, C. Hauck, P.K. Jain, C. Kessel, A. Gainaru, and J.M. Park, "Fusion Pilot Plant Design Acceleration," FY22 LDRD Project Report, Nov. 2022.
  9. V. Yadav, V. Agarwal, A.V. Gribok, R.D. Hays, A.J. Pluth, C.S. Ritter, H. Zhang, P.K. Jain, P. Ramuhalli, D. Eskins, J. Carlson, R.L. Gascot, C. Ulmer, and R. Iyengar, "Technical Challenges and Gaps in Digital Twin Enabling Technologies for Nuclear Reactor Applications," TLR/RES-DE-REB-2021-17, INL/EXT-21-65316, Dec. 2021.
  10. N.S. Panicker, R. Chaudhary, M.O. Delchini, V.M. Rao, and P.K. Jain, "Computational Fluid Dynamics Simulations to Support Efficiency Improvements in Aluminum Smelting Process," ORNL/TM-2021/2341, NFE-19-07798, Dec. 2021.
  11. P.K. Jain, M.T. Kao, V.M. Rao, E.L. Popov, D.T. Nguyen, J. Wilson, V. Badalassi, and W.D. Pointer, "Computational Fluid Dynamics Modeling to Simulate a Combined Reforming Process for Syngas and Hydrogen Production," ORNL/TM-2021/2313, CRADA/NFE-20-08198, Nov. 2021.
  12. J. Gounley, M.A. Dumas, M. Delchini, P.V. Lara, P.K. Jain, A. Sircar, and A. Spannaus, "Performant High-Order Lattice Boltzmann for Exascale Applications," FY21 LDRD Project Report, LOIS ID 9756, Oct. 2021.
  13. J.M. Park, M. Cianciosa, K. Kim, E. Hassan, R.K. Archibald, R.W. Smith, M.T. Kao, C. Daily, and P.K. Jain, "A Theory-Based Design Tool for Fusion Reactors," FY21 LDRD Project Report, LOIS ID 9879, Oct. 2021.
  14. R. Archibald, M. Cianciosa, C. Daily, L. Drane, E. Hassan, P.K. Jain, M.T. Kao, K. Kim, J. Lore, R. Smith, and J.M. Park, "Tokamak Reactor Engineering Environment Technical Report," ORNL/TM-166287, Sep. 2021.
  15. V.M. Rao, V. Kumar, A. Anderson, and P.K. Jain, "High-Accuracy Simulations to Model Pyrometallurgical Processes in a Secondary Lead Reverberatory Furnace," ORNL/TM-2021/2129, CRADA/NFE-19-07865, Aug. 2021.
  16. T.K. Howard, and P.K. Jain, "A Verification and Validation Approach for COMSOL Multiphysics to Support the High Flux Isotope Reactor (HFIR)," ORNL/TM-2021/1885, Jul. 2021.
  17. V. Yadav, H. Zhang, C.P. Chwasz, A.V. Gribok, C. Ritter, N.J. Lybeck, R.D. Hays, T.C. Trask, P.K. Jain, V. Badalassi, P. Ramuhalli, D. Eskins, R.L. Gascot, D. Ju, and R. Iyengar, "The State of Technology of Application of Digital Twin," TLR/RES-DE-REB-2021-01, INL/EXT-21-01124, Jun. 2021.
  18. A. Wysocki, J. Rader, S. Bhatt, and P.K. Jain, "Transformational Challenge Reactor: Preliminary Safety Analyses," ORNL/TM-2020/1738, Oct. 2020.
  19. B.R. Betzler et al., "Transformational Challenge Reactor Conceptual Design Report," ORNL/SPR-2020/1433, Feb. 2020.
  20. V.M. Rao, M.G. Delchini, M.T. Ahmad, and P.K. Jain, "High-Performance Computing to Enable Next-Generation Low-Temperature Waste Heat Recovery," ORNL/TM-2019/1455, Dec. 2019.
  21. B.R. Betzler, B.J. Ade, A.J. Wysocki, M.S. Greenwood, J.J.W. Heineman, P.C. Chesser, P.K. Jain, F. Heidet, and A. Bergeron, "Advanced Manufacturing for Nuclear Core Design," ORNL/TM-2019/1258, Aug. 2019.
  22. P.K. Jain, "Independent Review of HFIR Fuel Plate Welding Failure Analysis," C-HFIR-2019-002, R1, Aug. 2019.
  23. C. Carathers et al., "Oak Ridge National Laboratory HFIR OFE-488 Fuel Element Failure Causal Theory Evaluation Interim Report," ORNL/TM-2019/1120, Feb. 2019.
  24. K. Nawaz, M. Sandlin, C. Cramer, A. Elliot, P.K. Jain, E. Lara-Curzio, and B. Fricke, "Development of Next-Generation Heat Exchangers for Hybrid Power Generation," ORNL/SPR-2018/1063, Oct. 2018.
  25. B.R. Betzler, B.J. Ade, A.J. Wysocki, M.S. Greenwood, K.G. Field, J.M. Risner, P.K. Jain, J.R. Burns, B.D. Hiscox, and K.A. Terrani, "Transformational Challenge Reactor Preconceptual Design Incorporating Rapid Prototyping via Advanced Manufacturing," ORNL/SPR-2018/1008, Sep. 2018.
  26. D. Chandler, B. Betzler, D. Cook, G. Ilas, P.K. Jain, and D. Renfro, "Feasibility Studies for High Flux Isotope Reactor Conversion to Low-Enriched Uranium U3Si2 Fuel," In Press, ORNL TM Report, Oak Ridge National Laboratory, Oak Ridge, Tenn., Oct. 2017.
  27. P.K. Jain, "Independent Review of C-HFIR-2017-023 titled Design and Analysis of an Irradiation Target Capsule for the Production of Pu-238 using NpO2 Pellets," Aug. 2017.
  28. P.K. Jain, "Independent Review of C-HFIR-2016-041 titled Safety Basis Temperature and Expansion Calculation for Low Heat Flux SiC Cladding Rabbit Capsules," Mar. 2017.
  29. R.J. Belles, P.K. Jain, and J.J. Powers, "Oak Ridge National Laboratory Support of Non-Light Water Reactor Technologies: Capabilities Assessment for NRC Near-term Implementation Action Plans for Non-Light Water Reactors," ORNL/TM-2017/117, Oak Ridge National Laboratory, Oak Ridge, Tenn., Mar. 2017.
  30. C.J. Hurt, J.D. Freels, R.W. Hobbs, P.K. Jain, and G.I. Maldonado, "Thermal Safety Analyses for the Production of Plutonium-238 at the High Flux Isotope Reactor," ORNL/TM-2016/234, Oak Ridge National Laboratory, Oak Ridge, Tenn., Jul. 2016.
  31. P.K. Jain, "Independent Review of C-HFIR-2015-033 Rev.0 - Thermo-Mechanical Safety Analysis of a Pu-238 Fully Loaded Target Assembly for up to Three Irradiation Cycles in HFIR using COMSOL Multiphysics v5.1," Jul. 2016.
  32. P.K. Jain, "Independent Review of C-HFIR-2015-041 - Extension and Improvements to the Steady-State Thermal Qualification of the HFIR HB-1 Beam Tube," Jun. 2016.
  33. K.R. Robb, P.K. Jain, and T.J. Hazelwood, "High-Temperature Salt Pump Review and Guidelines – Phase I Report," ORNL/TM-2016/199, Oak Ridge National Laboratory, Oak Ridge, Tenn., May 2016.
  34. P.K. Jain, "Independent Review of C-HFIR-2015-019 - Temperature Verification and Expansion Calculation for SiC Cladding Specimens in a Rabbit Housing," Sep. 2015.
  35. P.K. Jain, "Independent Review of C-HFIR-2013-029 Rev.4 - COMSOL Thermal-Structure Interaction Simulations of NpO2 Fully Loaded Targets in HFIR," Jul. 2014.
  36. D.G. Renfro, D. Chandler, D. Cook, G. Ilas, P.K. Jain, and J. Valentine, "Preliminary Evaluation of Alternate Designs for HFIR Low-Enriched Uranium Fuel," ORNL/TM-2014/154, Oak Ridge National Laboratory, Oak Ridge, Tenn., Oct. 2014.
  37. P.K. Jain, "Independent Review of C-HFIR-2013-029 Rev.2 - COMSOL Thermal-Structure Interaction Simulations of NpO2 Fully Loaded Targets in HFIR," Feb. 2014.
  38. D. Chandler, D.H. Cook, G. Ilas, P.K. Jain, and D.G. Renfro, "Conceptual Design Parameters for HFIR LEU U-Mo Fuel Conversion Experimental Irradiations," ORNL/LTR-2013/132, Oak Ridge National Laboratory, Oak Ridge, Tenn., Jun. 2013.
  39. P.K. Jain, J.D. Freels, and D.H. Cook, "3D COMSOL Simulations for Thermal Deflection of HFIR Fuel Plate in the 'Cheverton-Kelley' Experiments," ORNL/TM-2012/138, Oak Ridge National Laboratory, Oak Ridge, Tenn., Aug. 2012.
  40. J.D. Freels, I.T. Bodey, R.V. Arimilli, F.G. Curtis, K. Ekici, and P.K. Jain, "Preliminary Multiphysics Analyses of HFIR LEU Fuel Conversion using COMSOL," ORNL/TM-2011/7, Oak Ridge National Laboratory, Oak Ridge, Tenn., Jun. 2011.
  41. P.K. Jain, "Simulation of Two-Phase Dynamics using Lattice Boltzmann Method," Ph.D. dissertation, Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA, 2010.
  42. P.K. Jain, "Numerical Analysis of Flow Stability in a Natural Circulation Loop with Supercritical Fluid," M.Sc. dissertation, Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA, 2006.

Recent Invited Presentations

  1. P.K. Jain, Invited Panelist at the 2026 ARPA-e Summit to Discuss the State of Advanced Nuclear in the Context of Data Centers. San Diego, CA, 2026. (Other Panelists Included EPRI’s AI Director and ARPA-e Deputy Director).
  2. P.K. Jain, “ORNL Contributions to the International Nuclear Security for Advanced Reactors (INSTAR) Program,” Presentation Briefing to NA-20 Defense Nuclear Nonproliferation Leadership, Oak Ridge National Laboratory, March 2026.
  3. P.K. Jain, “Powering Data Centers & Process Industry with Advanced Nuclear Solutions,”2026 Industrial Process EmeRging Technologies (IPER) Workshop, Southwest Research Institute, San Antonio, Texas, February 2026. 
  4. P.K. Jain, M. Drudy, K. Kielhofner, "Atomic Insights: AI’s Impact on the Nuclear Industry," Invited fireside chat panel at the East Tennessee Economic Council (ETEC)’s NOW Conference 2024, Alcoa TN, USA, July 30-31, 2024.
  5. P.K. Jain, "Panel Discussion on V&V and UQ of Machine Learning for Reactor Thermal Hydraulics: Progress and Future Opportunities," Invited panel presentation at the ANS Annual Conference 2024, Las Vegas, Nevada, USA, Jun. 16-19, 2024.
  6. P. Ramuhalli, P.K. Jain, W. Williams, M. Muhlheim, X. Zhao, A.G. Yigitoglu, D.D. Wet, A. Raj, "Digital Technologies for Nuclear Energy Transformation," Invited presentation to the Diablo Canyon Power Plant’s Operational Leadership, Jun. 11, 2024. 
  7. P.K. Jain, " Need for “AI-enabled” Digital Twins to Help Address Key Challenges with the Deployment of New Nuclear," Invited panel presentation at the ASME’s CARD 2024: Conference for Advanced Reactor Deployment, Charlotte, North Carolina, USA, Mar. 26-28, 2024.
  8. P.K. Jain, "Big AI Ideas to Address Key Grand Challenges with the Nuclear Deployment," Invited presentation at the Technical Meeting on the Deployment of Artificial Intelligence Solutions for the Nuclear Power Industry: Considerations and Guidance, U.S. Nuclear Regulatory Commission (US NRC) Headquarters in Rockville, Maryland, USA, Mar. 18-21, 2024.
  9. P.K. Jain, Invited Panelist at the Baker Hughes Energy Frontiers Summit, 2023.
  10. P.K. Jain, "Panel Discussion on Digital Twins for Risk and Safety Assessments," in Proc. American Nuclear Society (ANS) Meeting, Anaheim, CA, USA, Jun. 12-16, 2022.
  11. P.K. Jain, "Panel Discussion on Machine Learning for Reactor Thermal Hydraulics: Progresses, Challenges, and Opportunities," in Proc. American Nuclear Society (ANS) Meeting, Anaheim, CA, USA, Jun. 12-16, 2022.
  12. C. Sizemore, P.K. Jain, et al., "High Flux Isotope Reactor Low-Enriched Uranium Conversion Activities – March 2022 Status Update," presented at the U.S. High-Performance Research Reactor (USHPRR) Silicide Meeting, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN, USA, Mar. 29, 2022.

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