Consortium for Advanced Simulation of Light Water Reactors


The Consortium for Advanced Simulation of Light Water Reactors (CASL) is the first DOE Energy Innovation Hub. It was established in July 2010, for the purpose of providing advanced modeling and simulation (M&S) solutions for commercial nuclear reactors. CASL is a consortium that consists of ten core partners and numerous contributing members. The consortium connects fundamental research and technology development through an integrated partnership of government, academia, and industry that extends across the nuclear-energy enterprise. The CASL partner institutions possess interdisciplinary expertise necessary to apply existing M&S capabilities to real-world reactor design issues and develop new system-focused capabilities that will provide the foundation for advances in nuclear energy technology. CASL has been designed to promote collaboration and synergy among the partner institutions, taking advantage of the breadth and depth of their expertise and capitalizing on their shared focus and vision for developing solutions for the future of nuclear energy. (more CASL capabilities)

Industry's Role in CASL

Industry plays a key role on the CASL Energy Innovation Hub. The technology developed by CASL will be transferred to industry with the objective of improving fuel performance; reducing costs of cleaner, greener nuclear energy; and enhancing safety of currently operating commercial reactors. CASL industry partners provide the CASL project with input and guidance on the particular modsim capabilities that can achieve these CASL objectives.  They also define industry challenge problems that help to drive technology development and demonstrate capability as it is established. Participation in the CASL Hub allows industry partners to learn directly from researchers at national labs and universities, and it allows the researchers to gain from hands-on experience and expertise of the industry. Additionally, the CASL Industry Council provides a cross-cutting industry viewpoint to ensure CASL's technology is broadly useful.

Science & Technology Highlights

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Westinghouse Completes its AP1000® Test Stand
— Last June, CASL launched its first Virtual Environment for Reactor Applications (VERA) Test Stand on the Westinghouse engineering computer cluster. Westinghouse selected the AP1000® pressurized water reactor (PWR) first core for the Test Stand simulation

University of Michigan adds Depletion Capability to MPACT for VERA-CS
— MPACT is a three-dimensional (3-D) whole core transport code being developed by the University of Michigan and ORNL for the CASL VERA toolset. MPACT’s integral transport solution is obtained by means of the method of characteristics (MOC)

Validation of Peregrine with Test Reactor Data
— At the end of September, Pellet-Cladding Interaction (PCI) Challenge Problem Integrator Robert Montgomery reported that good progress has been made in demonstrating the Peregrine LWR fuel performance modeling software.

Lift Forces in Bubbly Flows
— The dynamics of two-phase (gas/liquid) bubbly flows are complex: bubbles deform and disperse; large latent heats and heat capacity differentials influence local boiling; and relatively small changes in heated surface temperatures yield order of magnitude changes in boiling complexity.


Virtual Office Community and Computing (VOCC) Lab

The VOCC Lab is where all collaboration and Ideation is facilitated for the CASL Energy Innovation Program. The lab was designed by the CASL CIO to specifically accommodate CASL collaborative energy innovation workflow. VOCC is operated and fostered today by the VOCC Project inside the CASL Program. The Lab operates on a scientific “work social paradigm” providing collaborative communication, computing, and visualization and modeling in support of energy research. 


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