CFD Analysis of Flow Distribution at The Core Inlet of a Nuclear Pressurized Water Reactor
This paper mainly focused on the sensitivity analysis on grid configuration for a CFD benchmark problem. A combination of structural and unstructural grids was applied in the whole regions of the pressure vessel independently. The core downcomer and the core inlet dome were described in detail, but in different types of grid. The core was simulated by a simple module. The results of a detailed flow distribution of core inlet and the volume fraction of two inlet loops are obtained. The results show that the application of the CFD technology in the reactor thermal-hydraulic analysis is feasible. But the results are very sensitive to the placement of the interface between different parts of grids. Some conclusions on the applicability of CFD for turbulent mixing problems in core were drawn. Some recommendations on CFD modeling were also proposed in this paper. Although no fully grid-independent numerical solutions could be obtained, it can be concluded about the suitability of applying CFD methods in engineering applications for turbulent mixing in nuclear reactors.
CFD flow distribution in core inlet dome fluid mixing grid configuration
Ge ZHANG Yanhua YANG Hanyang GU
School of Nuclear Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shangh School of Nuclear Science and Engineering, Shanghai Jiao Tong University,800 Dongchuan Road, Shangha
国际会议
上海
英文
550-558
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）