对中国实验快堆旋塞环形空间自然对流的数值模拟

Numerical Simulation of Natural Convection in Annual Space of Rotating Plug for The CEFR Fast Reactor

快中子增殖堆中有很多下端开口的环形空间 ,这些环形空间中氩气的自然对流使得环形空间的内外壁面产生非均匀的热应力 ,是快堆设计必须解决的问题。针对我国正在进行的快堆的设计要求 ,对我国第一座快堆 (CEFR)环形空间的自然对流进行了数值模拟。模拟采用了LVEL紊流模型。计算结果可供CEFR设计参考。

There are numerous penetrations for the components in a pool type LMFBR. These penetrations formed generally annular spaces. In these annular spaces, the gas circulates up and down in the pattern of non axisymetrical natural convection flow. So it is important to simulate the natural convection in the annular space. When making numerical simulation of CEFR variation of argon property is taken into account. Detailed numerical results for CEFR are presented. These solutions are useful to the design of CEFR.