Investigation of turbulence models of CFX in predicting heat transfer to supercritical water in a vertical tube
Computational fluid dynamics (CFD) codes are widely used to investigate the thermalhydraulics of revolutionary reactor concepts in the last decade. Most CFD codes, including ANSYSCFX, solve Navier-Stokes equations by Reynolds averaging approach, which use turbulence modelsand wall functions. These turbulence models and wall function are validated against experimentaldata under subcritical pressures. However, the applicability of them to supercritical water heattransfer has to be examined. The objective of the present study is to evaluate the performance of theturbulence models of CFX in predicting supercritical heat transfer under strong buoyancyinfluences. The calculation results have been compared with two independent validationexperimental data. The results indicate the need to improve a turbulence model to take into accountthe buoyancy effect and property variations on the turbulence for thermal-hydraulic calculations ofthe supercritical water.
LI Jie YU Junchong JIANG Guangming
Tsinghua University,Beijing,China Nuclear Power Institute of China,Chengdu,China Nuclear Power Institute of China,Chengdu,China
国际会议
3rd China-Canada Joint Workshop on Supercritical Water-Cooled Reactors(第三届中国-加拿大超临界水堆研讨会 (CCSC-2012)
西安
英文
1-9
2012-04-18（万方平台首次上网日期，不代表论文的发表时间）