模型泵内部流场的数值模拟  

Numerical Simulation of Interior Flow Field of Nuclear Model Pump

作　　者：王春林[1] 彭娜[1] 康灿[1] 赵佰通[1] 张浩[1] 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《核动力工程》2009年第4期81-85,共5页Nuclear Power Engineering

摘　　要：采用雷诺时均N-S方程和标准k-ε湍流模型,应用三维非结构四面体网格建模,选用旋转流体机械模型中的多重参考坐标系模型(MRF),对设计工况下反应堆主冷却剂泵模型泵的三维不可压缩湍流流场进行了数值模拟,模拟结果较好地揭示了内部流场的特点。本文分析了流场内总的压力分布和速度分布,描述了叶轮、导叶和球壳各个部分的内部流场特征,并探讨了造成这些特征的原因。研究结果可用于反应堆主冷却剂泵的性能预测,并为其水力优化设计提供有益参考。Reynolds time-averaged N-S equations and the standard k-ε turbulent model were adopted, and three-dimensional non-structural of tetrahedral mesh division was used for modeling. Multiple reference frame model of rotating fluid mechanical model was used, under the design condition, the three-dimensional incompressible turbulent flow of nuclear model pump was simulated, and the results preferably post the char- acteristics of the interior flow field. This paper first analyzes the total pressure and velocity distribution in the flow field, and then describes the interior flow field characteristics of each part such as the impeller, diffuser and spherical shell, and also discusses the reasons that cause these characteristics. The study results can be used to estimate the performance of nuclear model pump, and will provide some useful references for its hydraulic optimized design.

关 键 词：模型泵 湍流 流场 数值模拟 

分 类 号：TH313[机械工程—机械制造及自动化]