GTRF Calculations Using Hydra-TH (THM.CFD.P5.05)

Bakosi, Jozsef¹  Christon, Mark A.¹  Francois, Marianne M.¹  Lowrie, Robert B.¹  Nourgaliev, Robert¹ 

[1] Los Alamos National Laboratory

关键词: FUEL ELEMENT CLUSTERS;    GEOMETRY;    LARGE-EDDY SIMULATION;    SIMULATION;    THERMAL HYDRAULICS;    WATER;   

DOI  :  10.2172/1050491
RP-ID  :  LA-UR-12-24518
PID  :  OSTI ID: 1050491
Others  :  TRN: US1204704

美国|英语

来源: SciTech Connect

【 摘 要 】

This report describes the work carried out for completion of the Thermal Hydraulics Methods (THM) Level 3 Milestone THM.CFD.P5.05 for the Consortium for Advanced Simulation of Light Water Reactors (CASL). A series body-fitted computational meshes have been generated by Numeca's Hexpress/Hybrid, a.k.a. 'Spider', meshing technology for the V5H 3x3 and 5x5 rod bundle geometry used to compute the fluid dynamics of grid-to-rod fretting (GTRF). Spider is easy to use, fast, and automatically generates high-quality meshes for extremely complex geometries, required for the GTRF problem. Hydra-TH has been used to carry out large-eddy simulations on both 3x3 and 5x5 geometries, using different mesh resolutions. The results analyzed show good agreement with Star-CCM+ simulations and experimental data.