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基于单流道瞬态仿真的旋转流体机械伪集总叶片法研究

本站小编 Free考研考试/2021-12-21

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基于单流道瞬态仿真的旋转流体机械伪集总叶片法研究
Pseudo Lamped-Blade Simulation Method of Turbomachinery Based on Single-Blade Transient Simulation
投稿时间:2018-10-29
DOI:10.15918/j.tbit1001-0645.2019.08.415
中文关键词: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
English Keywords:hydrodynamic torque converter(HTC)blade-row interactiontransient simulation methodpseudo lumped-blade simulationfrequency analysis
基金项目: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(GZ2017035104).
作者单位E-mail
闫清东北京理工大学 车辆传动国家重点实验室, 北京 100081
柯志芳北京理工大学 车辆传动国家重点实验室, 北京 100081
魏巍北京理工大学 车辆传动国家重点实验室, 北京 100081weiweibit@bit.edu.cn
李晋北方车辆研究所, 北京 100072
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中文摘要:
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.
English Summary:
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.
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