压水堆上腔室模拟体三维流场分析

Three-dimensional Flow Field Analysis for PWR Upper Plenum Simulator

本文以秦山核电厂压水堆为例，对其上腔室模拟体内的紊流强迫流动进行了三维稳态研究。采用Ｌａｕｎｄｅｒ和Ｓｐａｌｄｉｎｇ提出的Ｋ－ε两方程模型，并结合壁面函数法，对模拟体内的紊流强迫流动进行了数值模拟，得到了三维流速分布以及最大横向流速所在区域。在上腔室模拟体上，以水为介质进行了流场的可视化实验研究，采用激光测速仪测得了纵向流速分布，并用流线显示了流场，数值计算与流场试验结果符合较好．

This paper presents a three-dimensional numerical prediction and experiments for stationary turbulent force flow in Qinshan PWR upper plenum simulator.The K-ε model of turbulence,which is presented by Launder and Spalding,is applied to the numerical.calculation,and the wall function method is also used in the calculation to modify the boundary conditions.The three-dimensional velocity distribution and the locations of maximum lateral velocity are obtained.The experiments on the upper plenum simulator are carried out,the velocity distribution is measured by dappler laser velocity meter.The computational results are in agree ment with experimental data.