液力变矩器导轮叶片表面压力测量与分析  

Pressure Measurement and Analysis of Stator Blade Surface of Hydrodynamic Torque Converter

作　　者：闫清东[1,2] 宋泽民 魏巍 谭路[3] 刘博深 YAN Qingdong;SONG Zemin;WEI Wei;TAN Lu;LIU Boshen(National Key Lab of Vehicular Transmission,Beijing Institute of Technology,Beijing 100081;Collaborative Innovation Center of Electric Vehicles in Beijing,Beijing 100081;FAW-Volkswagen Automotive CO.,Ltd.,Chengdu Branch,Chengdu 610199;School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083)

机构地区：[1]北京理工大学车辆传动国家重点实验室,北京100081 [2]北京电动车辆协同创新中心,北京100081 [3]一汽-大众汽车有限公司成都分公司,成都610199 [4]北京科技大学机械工程学院,北京100083

出　　处：《机械工程学报》2019年第10期115-121,共7页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51475041);国家部委基础产品创新计划(237099000000170009);车辆传动国家重点实验室基金(614221304040517)资助项目

摘　　要：为深入理解液力变矩器这种典型旋转叶轮机械内部复杂三维流动现象,获取导轮叶片表面典型部位压力分布规律,提出一种定子叶片表面液体压力场测试方案,通过在导轮叶片压力面埋入微型动态压力传感器,对不同输入转速和速比工况下的导轮叶片表面典型部位压力进行试验测试并进行流场数值模拟对比。结果表明,测试数据与模拟结果高度吻合,较准确地描述了叶片表面压力场的变化趋势,叶片表面压力脉动频率与旋转叶轮转速及叶片数有关。这种压力测试方法不仅能对流场数值模拟进行有效性验证,同时也能为叶轮动态性能设计提供参考依据。In order to deeply understand the complex three-dimensional flow phenomenon in a rotating machinery such as a hydrodynamic torque converter and obtain the pressure distribution law of the typical sites of the stator blades surface,a testbench scheme of the fluid pressure field on the stator blade surface is proposed.The micro dynamic pressure sensors are adopted to measure pressure distribution of typical sites on the stator blade surface under different operation conditions of various input speeds and speed ratios.The test data are compared with the CFD numerical simulation of flow field.The results show that the test data are in good agreement with the simulation results.The variation trend of the pressure field on the blade surface is accurately described.The frequency of the pressure pulsation on the blade surface is related to the rotational speed of the impeller and the number of blades.This pressure field test not only validates the numerical simulation of flow field,but also provides a theoretical reference for the design of dynamic performance of rotating machinery.

关 键 词：液力变矩器 压力测试 计算流体力学 定子叶片 

分 类 号：TH137[机械工程—机械制造及自动化]