基于CFD的汽车水泵数值模拟与试验验证  

Numerical Simulation and Test Verification of Automotive Water Pump Based on CFD

作　　者：张杰[1] 赵波[1] 李金国 

机构地区：[1]上海工程技术大学,上海201620 [2]上汽集团上海幸福摩托车有限公司,上海201900

出　　处：《流体机械》2016年第11期6-10,共5页Fluid Machinery

摘　　要：以雷诺时均N-S方程为基本控制方程,采用标准k-ε湍流模型,利用计算流体动力学软件Pump Linx模拟了汽车水泵内部的三维湍流流场,研究了水泵叶轮平衡孔及口环间隙对多工况下外特性的影响,并以叶轮有口环间隙、平衡孔这一工况对复杂流场中各个位置上的压力分布、速度分布和叶轮汽蚀进行分析。通过与试验数据进行对比验证,试验结果与数值预测结论基本吻合。提出了减小汽车水泵各部件水力损失的合理性建议,研究结论有效地指导了汽车水泵的开发过程,对其他同类产品的研发也具有指导意义。The three-dimensional turbulent flow in an automotive water pump with the impeller balance hole and clearance of wear-rings,which under the external characteristics of the influence,was simulated employing the time-averaged N-S equations, the standard k-εturbulence model by computational fluid dynamics software PumpLinx.The impeller with the balancing hole and clearance in the working conditions of complex flow field was analyzed in each position of the pressure distribution,velocity distribution and the impeller cavitation .A comparison with experimental data shows that the experimental results is basically consistent with the experimental observations.Reasonable proposals were put forward to reduce the hydraulic losses of automotive water pump parts.The research results can guide the development and design of the pump as well as the congener products.

关 键 词：汽车水泵 外特性 试验验证 

分 类 号：TH3[机械工程—机械制造及自动化] U464.238[机械工程—车辆工程]