摘要
针对旋转流体机械的全流道模型仿真方法成本高,且网格质量难以保证的问题,提出了一种基于单流道瞬态仿真模型的伪集总叶片法来计算叶轮转矩和分析变矩器的叶轮交互效应及其内部流场特性.建立了D400型液力变矩器的三维瞬态单流道仿真模型,提出基于PLSM来计算叶片和叶轮的时域转矩,并以此进一步分析变矩器的叶轮交互效应及其对液力变矩器性能的影响.研究结果表明:该方法得到的泵轮,涡轮和导轮的转矩结果与实验结果最大误差不超过11.1%,原始特性的误差小于4.37%,性能特性与理论及实验结果一致;该方法有效可靠,可在保持精度的同时降低计算成本.
Since the higher cost and difficulty in mesh quality control of full blade simulation method,a pseudo-lumped-blade simulation method(PLSM)was proposed to analyse the blade-row interaction as well as its effect on the performance of the hydrodynamic torque converter.Firstly,a three-dimensional,transient,single-blade passage model was established based on a D400 hydrodynamic torque converter.And then the PLSM was used to calculate the time-independent blade’s torque as well as the time-dependent impeller torque,so as to further study on the blade-row interaction effect and its impact on torque converter performance.Finally,the PLSM was validated in pump wheel,turbine and idler pulley samples.The results show that,the most error of the torque is less than 11.1%and the analysis error for the original characteristic of torque converter is less than 4.37%.It implies that PLSM is effective and reliable,and can not only reduce the calculation costs,but also be of great help to further study the blade-row interaction for hydrodynamic torque converters.
作者
闫清东
柯志芳
魏巍
李晋
YAN Qing-dong;KE Zhi-fang;WEI Wei;LI Jin(National Key Lab of Vehicular Transmission,Beijing Institute of Technology,Beijing 100081,China;North Vehicle Research Institute,Beijing 100072,China)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2020年第3期243-249,共7页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金资助项目(51475041,51805027)
国家部委基础产品创新计划资助项目(237099000000170009)
国家重点实验室基金资助项目(614221304040517)
北京理工大学国际合作专项资助项目(GZ 2017035104)。
关键词
液力变矩器
叶轮交互效应
瞬态仿真
伪集总叶片法
频域分析
hydrodynamic torque converter(HTC)
blade-row interaction
transient simulation method
pseudo lumped-blade simulation
frequency analysis
