|
|
WP4: Project 1
|
Coupled 3D asymmetric neutronics/thermal hydraulics for Gen IV fault studies
|
Investigators: Professor C.C. Pain and Professor A.J. Goddard
Additional Researchers: Dr. M.D. Eaton and Dr. M.D. Piggott
KNOO funded: Dr. J.L.M.A. Gomes, B. Tollit, J. Dunstall and A. Hagues
Cross cutting with WP1
|
|
|
Multi-scale physics and fluids modelling will be used to perform 3D whole core spatially coupled transient studies for a range of faults for VHTR and GFR models. This will use the generic advanced reactor FETCH option implemented as described in Work Package 1, but with a primary research focus on representing the physics and engineering of particular systems and of understanding and modelling the physics and engineering of selected fault and severe accident sequences.
Among data sources will be heat transfer and fuel/materials performance research performed by partners in this Work Package. Among system specific activities will be representation of geometries and coolant pathways of these reactors represented numerically (finite element mesh for both radiation transport and fluids); application of Large Eddy Simulation methods to heat transfer in these reactors (no coupling); improving heat transfer correlations by incorporating standard correlations and using detailed LES modelling to obtain heat transfer correlations; solve with structural effects or movement; fully coupled VHTR and GFR simulations and analysis. Spatial and temporal temperatures during steady state and selected transients and neutron fluences will be generated. Severe accident transients will be selected, and the particular physics assessed and implemented, in collaboration with industry and international collaborators, from among UTOP, depressurisation, particulate transport, air ingress modelling and natural circulation for VHTR and, for GFR, shutdown systems (including detailed representation of control rod movement during transients) and depressurisation.
|
|
