基于CFD的双导轮液力变矩器流场模拟与试验研究  

Field simulation and experiment study for double stators hydraulic torque converter based on CFD

作　　者：李绍玲 张春燕 刘登水 LI Shaoling;ZHANG Chunyan;LIU Dengshui(College of Mechanical Engineering,Anhui Science and Technology University,Fengyang 233100,China;Huatai Hydraulic Torque Converter Co.,Ltd.,Bengbu 233000,China)

机构地区：[1]安徽科技学院机械工程学院,安徽凤阳233100 [2]华泰液力变矩器股份有限公司,安徽蚌埠233000

出　　处：《安徽科技学院学报》2024年第2期103-109,共7页Journal of Anhui Science and Technology University

基　　金：中央引导地方科技发展专项资金项目(202007d08050022);安徽省高校自然科学研究项目(2022AH040238);安徽省自然科学基金面上项目(2308085ME178);安徽省粮食机械乡村振兴协同技术服务中心项目(GXXT-2022-077);滁州市科技计划项目(2022ZN014,2022ZN016);安徽科技学院科研发展基金(FZ220235)。

摘　　要：目的:针对双导轮液力变矩器两个导轮依次空转的仿真难点,提出一种导轮无叶片处理的CFD数值模拟方法,以便正确获取双导轮液力变矩器内部流场。方法:借助Solidworks对自行设计的双导轮液力变矩器进行流道模型抽取,采用导轮无叶片法模拟导轮变相点后的空转工况,利用ANSYS Meshing进行网格划分,得到3种全流道网格模型。运用ANSYS Fluent进行CFD数值计算,模拟转速比i=0.6中速工况下的流场特征。在液力变矩器试验台上进行样机的台架试验,得到其原始特性曲线。结果:CFD数值模拟能够准确预测双导轮液力变矩器的原始特性,仿真结果与试验结果较为吻合。泵轮与涡轮入口到出口的速度与压力变化趋势相反,两个导轮的速度与压力变化相对较小。结论:采用CFD数值计算并结合导轮空转无叶片法能够较好地预测双导轮液力变矩器的流场特性,为进一步优化设计提供理论参考。Objective:Aiming at the difficulty of simulation of double stators idling in sequence,a CFD numerical simulation method for the bladeless treatment of the double stators was proposed in order to obtain the internal flow field of the double stators hydraulic torque converter.Methods:The flow channel model of self-designed double stators hydraulic torque converter was extracted by Solidworks software,to simulate the idling condition of the two stators,a bladeless method was applied,ANSYS Meshing software was utilized and three kinds of full channel grid models were obtained.The flow field characteristics under medium speed condition with a speed ration of 0.6 was simulated by CFD numerical calculation using ANSYS Fluent software.Test of the prototype was carried out on the test platform of the torque converter,and its original characteristic curve was obtained.Results:CFD numerical simulation can accurately predict the original characteristics of the double stators hydraulic torque converter,simulation results were in good agreement with test results.The variation trend of velocity and pressure for pump and turbine from the inlet to the outlet is opposite,while velocity and pressure of two stators changed relatively small.Conclusion:The flow field characteristics of double stators torque converter can be accurately predicted by CFD numerical calculation combined with the idling bladeless method,which provides a theoretical reference for further optimization design.

关 键 词：双导轮液力变矩器 计算流体力学 数值模拟 导轮无叶片法 

分 类 号：TH137[机械工程—机械制造及自动化]