超扁平化液力变矩器泵轮流场主流特征分析

王欢; 吴光强; 冀海燕

doi:10.3969/j.issn.1671-7775.2009.05.008

PDF(269 KB)

江苏大学学报（自然科学版） ›› 2009, Vol. 30 ›› Issue (5) : 463-466. DOI: 10.3969/j.issn.1671-7775.2009.05.008

论文

超扁平化液力变矩器泵轮流场主流特征分析

作者信息 +

Main flow features analysis on impeller of super flat automotive torque converter

Author information +

文章历史 +

摘要

为减小轴向尺寸，降低重量，对液力变矩器进行了超扁平化设计．采用更加严格的遵循物理意义的收敛准则，对一款新型的超扁平化液力变矩器的稳态内流场进行数值仿真．通过分析速度场和压力场，揭示了泵轮流道内的主流特征．根据液力变矩器结构特点和流体力学知识分析了造成液力变矩器流场缺陷的原因．借助弦向截面的速度、压力场分布情况研究了射流一尾流特征以及二次环流的产生和发展趋势．结果表明，对流场主流特征的分析可作为液力变矩器的设计、优化的依据．

Abstract

Automotive torque converter was designed with a flat profile for the purpose of achieving a smaller axial size and weight saving. Strict convergence criteria that conformed with physical principle was employed to simulate steady internal flow of a new super flat torque converter. The main flow features of impeller were obtained through velocity and pressure fields analysis. According to structure characteristics of torque converter and hydrodynamics knowledge, the reasons that caused flow defection of torque converter were studied. The features and developing trend of jet-wake flow and secondary circulation were analyzed by velocity and pressure field in meridional planes. Main flow features analysis results of internal flow field can be used to design and optimize the structure.

导出引用

王欢, 吴光强, 冀海燕. 超扁平化液力变矩器泵轮流场主流特征分析[J]. 江苏大学学报（自然科学版）, 2009, 30(5): 463-466 https://doi.org/10.3969/j.issn.1671-7775.2009.05.008

Wang Huan, Wu Guangqiang, Ji Haiyan. Main flow features analysis on impeller of super flat automotive torque converter[J]. Journal of Jiangsu University(Natural Science Edition), 2009, 30(5): 463-466 https://doi.org/10.3969/j.issn.1671-7775.2009.05.008

参考文献

[1]Ejiri E M, Kubo. Influence of the flatness ratio of an automotive torque converter on hydrodynamic performance [J].Journal of Fluids Engineering, 1999, 121 : 614 - 620.

[2]Kim Giwoo, Jaeduk Jang. Effects of stator shapes on hy-draulic performances of an automotive torque converter with a squashed torus [ J ]. SAE Paper, 2002 - O1 - 0886.

[3]Jean Schweitzer, Jeya Gandham. Computational fluid dynamics in torque converters: validation and application [ J ]. International Journal of Rotating Machinery,2003, 9:411 -418.

[4]Wu Guangqiang, Yan Peng. System for torque converter design and analysis based on CAD/CFD integrated platform [ J ]. Chinese Journal of Mechanical Engineering, 2008,21 (4) :35 - 39.

[5]葛安林田华王健.基于三维流场计算的变矩器改型设计[J].江苏大学学报,2005,26(3):206-208.

[6]Yu Dong. Torque converter CFD engineering. Part I: torque ratio and K factor improvement through stator modifications [ J ]. SAE Paper,2002 - 01 - 0883.

[7]Denton J D. The calculation of three-dimensional viscous flow through multistage turbomachines [ J ]. ASME,90 - GT - 19.

[8]Flack R K. Fundamental analysis of the secondary flows and jet-wake in a torque converter pump. Part II: flow in a curved stationary passage and combined flows [ J ]. Journal of Fluids Engineering ,2005, 127:75 - 82.