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中文摘要：
为深入理解和分析高温高压工况条件下某主冷却剂泵性能，采用计算流体力学方法（CFD）对其内部复杂的三维流场进行了数值模拟与分析．建立了某主冷却剂泵各部件几何模型，并对其进行网格划分．通过求解RANS方程对主冷却剂泵内部三维流场进行数值求解，湍流流动采用SST模型进行模拟．计算得到该泵在高、低设计转速时的扬程、功率和效率等性能参数．计算结果与试验数据相比较，误差在4％以内．分析表明采用CFD方法模拟结构复杂的主冷却剂泵内部流动是可行的．
英文摘要：
Computational fluid dynamics （CFD） was used to analyze the performance of a primary coolant pump. The pump was simulated to determine inner three-dimensional flow when working at high temperature and high pressure. The first step was to establish a geometric model of the pump, and for this a hexahedron structural mesh and tetrahedron non-structural mesh were used to mesh it. The three-dimensional flow of the primary coolant pump was solved using Reynolds-averaged Navier-Stokes （RANS） equations. The shear-stress transport （SST） model was adopted to simulate turbulent flow. Parameters such as power, lifting capacity and efficiency at high and low design rotating speeds were obtained. A comparison between the results of our calculations and experimental data shows that the error was less than 4%, proving it is feasible to simulate the complex flow in a primary coolant pump by the CFD method.
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