液力缓速器三维数值模拟及性能预测  

3D Numerical Simulation and Performance Prediction of Hydraulic Retarder

作　　者：何仁[1] 严军[1] 鲁明[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013

出　　处：《汽车工程》2009年第3期250-252,266,共4页Automotive Engineering

基　　金：教育部博士学科点专项科研基金(200602990110);江苏大学博士生创新基金(1293000416)资助

摘　　要：采用标准k-ε模型和SIMPLEC算法对液力缓速器内部流场进行了数值模拟,计算结果揭示了流道内湍流流动的速度分布、压力分布和湍动能分布规律,从而分析出该型叶轮流动的特点。在流场分析与计算的基础上,提出了液力缓速器性能预测方法,对规定工况点的性能进行了预测,并分析了预测结果和试验结果差异的原因。By using the standard κ-ε model and SIMPLE-C algorithm, a numerical simulation on the internal flow field of hydraulic retarder is conducted. The results reveal the distribution laws of speed, pressure and turbulent kinetic energy of the turbulent flow in the flow passages of hydraulic retarder. Based on these, a prediction method of hydraulic retarder performance is proposed, and the performance in given working conditions is predicted with the causes of the discrepancy between the predicted result and tested one analyzed.

关 键 词：液力缓速器 数值模拟 性能预测 

分 类 号：U463.5[机械工程—车辆工程]