大功率调速型液力偶合器数值计算与实验  

Numerical Calculation and Experiment of High-power Variable Speed Hydrodynamic Coupling

作　　者：何延东[1] 刘刚[2] 朱向哲[1] 

机构地区：[1]辽宁石油化工大学机械工程学院,抚顺113001 [2]辽宁省农业机械化研究所,沈阳110161

出　　处：《农业机械学报》2012年第8期37-41,93,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2007AA05Z256);辽宁省教育厅资助项目(L2010249)

摘　　要：基于三维多相流动理论和计算流体动力学(CFD),采用滑动网格理论对大功率调速型液力偶合器内部气液两相瞬态流动进行数值计算,并基于流场数值解进行液力偶合器的特性预测。由数值计算结果分析偶合器效率降低的原因。对偶合器进行不同工况、不同充液率下的外特性实验,将理论计算与实验结果进行对比,原始特性的计算与实验结果误差在允许范围内,从而验证理论方法和计算的准确性。The transient unsteady two phase flow of high-power variable speed hydrodynamic coupling was numerical simulated based on the 3-D multi-phase flow theory and computational fluid dynamics （CFD） by using the sliding mesh method and the characteristics was predicted. The pressure and velocity distribution were analyzed to reveal the flow rule and characteristics of flow field. The reduced efficiency reasons were revealed. The theoretical calculation was compared with the external characteristic experiment under different filling rates. The maximum error was less than 15% between computational result of original characteristics and experiment results, and the correctness of theory method was verified.

关 键 词：大功率调速型液力偶合器 计算流体动力学 两相流动 数值计算 实验 

分 类 号：TH137.331[机械工程—机械制造及自动化]