Validation of Peregrine with Test Reactor Data
January 27, 2014 — 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
January 27, 2014 — 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.
Implementing Integrated Steam Tables
December 20, 2013 — At the end of August, CASL published an equation of state model library for use with VERA. The IAPWS95 and IAPWS-IF97 standard models for the thermodynamic properties of water and the associated transport property models implemented within the library were verified to reproduce the analytic models across the range of validity.
Effect of Grain Boundaries on Irradiation Growth of Zirconium-based Alloys
December 19, 2013 — At the end of August, researchers S.I. Golubov, A.V. Barashev and R.E. Stoller delivered to CASL an analysis of the effect of grain size on the radiation growth of multigrain, hexagonal close-packed (hcp) metals, taking into account the features of cascade damage due to neutron exposure. Irradiation growth occurs in zirconium-based alloys used for LWR fuel cladding.