Numerical simulation of hydrodynamic torque converter considering leakage area

被引：0

作者：

Yan Q. ^{[1
,2
]}

Meng X. ^{[1
]}

Wei W. ^{[1
,2
]}

机构：

[1] National Key Laboratory of Vehicular Transmission, Beijing Institute of Technology, Beijing

[2] Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing

来源：

Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2018年 / 46卷 / 11期

关键词：

Clearance flow; Flow loss; Leakage area; Numerical simulation; Torque converter;

D O I：

10.13245/j.hust.181107

中图分类号：

学科分类号：

摘要：

In order to study the flow loss in the leakage area of a hydrodynamic torque converter and how leakage flow influences the overall performances, numerical simulation of a hydrodynamic torque converter considering flow loss in the leakage area was carried out. It is found that the prediction accuracy of torque ratio and capacity factor is improved by 3.1% and 4.6% separately when considering the leakage area. The simulation results show that with the increase of the speed ratio, the main circulating flow and leakage flow decrease gradually, and the leakage flow accounts for about 4% of the total flow of torque converter. There is a secondary flow phenomenon in leakage area. Vortex and the sudden change of flow cross section result in the loss of the leakage area, and the flow loss at low speed ratio is higher than that at high speed ratio. Compared to the simulation model without leakage area, the outflow of leakage area can reduce the eddy viscosity at the pump inlet. © 2018, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.

引用

页码：36 / 40

页数：4

共 2 条

[1]

Marathe B.V., Lakshminarayana B., Experimental investigation of steady and unsteady flow field down-stream of an automotive torque converter turbine and stator, International Journal of Rotating Machinery, 119, 3, pp. 67-84, (2014)

[2]

Ainley S.B., Flack R.D., Brun K., Et al., Laser velocimeter measurements in the pump of an automotive torque converter, part I: effect of speed ratio, International Journal of Rotating Machinery, 6, 3, pp. 167-180, (2014)

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