限矩型液力偶合器内部两相流动数值模拟

唐欣怡; 李志鹏; 王阳; 李铁梅; 孙军红

doi:10.13433/j.cnki.1003-8728.20200573

限矩型液力偶合器内部两相流动数值模拟

doi: 10.13433/j.cnki.1003-8728.20200573

1.
长沙理工大学能源与动力工程学院, 长沙 410114
2.
湖南中特液力传动机械有限公司, 湖南益阳 413003

详细信息

作者简介:
唐欣怡(1997-), 硕士研究生, 研究方向为流体机械及工程, tangxinyi0722@163.com

通讯作者:
李志鹏, 教授, 硕士生导师, 1379448@163.com

中图分类号: TH137.331
计量
- 文章访问数: 122
- HTML全文浏览量: 69
- PDF下载量: 18
- 被引次数: 0
出版历程
- 收稿日期: 2021-01-30
- 刊出日期: 2023-01-25

Numerical Simulation on Two-phase Flow Field in Torque Limited Hydrodynamic Coupling

1.
College of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114, China
2.
Hunan Zhongte Hydraulic Transmission Machinery Co., LTd., Yiyang 413003, Hu′nan, China

摘要

摘要: 限矩型液力偶合器内部存在着复杂的气液两相流动，为掌握限矩型液力偶合器内部流场分布及转矩特性变化，分别采用VOF(Volume of fluid)与Mixture两相流模型对偶合器内部流场进行模拟计算，并对其转矩特性进行监测。通过VOF模型获得的偶合器内部气液两相分布情况和通过Mixture模型得到的其内部压力速度分布图能够较好地反映偶合器内部流场变化情况。仿真结果表明：VOF模型能够较好地模拟出偶合器因流态转变而造成的转矩跌落情况，Mixture模型不能模拟出该效果，但在高、低转速比工况下模拟的转矩值仍具有一定参考意义。
- 限矩型液力偶合器 /
- 气液两相流动 /
- 转矩特性 /
- 两相流模型
Abstract: The complex gas-liquid two-phase flow occurs in the torque limited hydrodynamic coupling, in order to grasp the internal flow field distribution and torque characteristics of the torque limited hydrodynamic coupling, the internal flow field of the coupling was simulated by solving VOF(Volume of fluid) and Mixture two-phase flow model, and its torque characteristics was monitored. The gas-liquid two-phase distribution inside the coupling obtained by the VOF model, the internal pressure and velocity distribution obtained by the Mixture model can better reflect the change of the internal flow field of the coupling. The simulation results show that the VOF model can better simulate the torque drop of the coupling caused by the transition of the flow regime; the Mixture model cannot simulate this effect, but the torque under high or low speed ratios still have certain reference significance.
- torque limited hydrodynamic coupling /
- gas-liquid two-phase flow /
- torque characteristics /
- two-phase flow model

HTML全文

图 1 几何模型

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图 2 泵轮和涡轮流道的interface示意图

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图 3 50%充液率下初始化图

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图 4 转矩监测曲线

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图 5 3种充液率下轴向截面气液两相体积分布云图(i=0)

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图 6 3种充液率下轴向截面压力分布云图(i=0)

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图 7 3种充液率下轴向截面速度矢量图(i=0)

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图 8 3种充液率下轴向截面气液两相体积分布云图(i=0.6)

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图 9 3种充液率下轴向截面压力分布云图(i=0.6)

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图 10 3种充液率下轴向截面速度矢量图(i=0.6)

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图 11 3种充液率下轴向截面气液两相体积分布云图(i=0.96)

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图 12 3种充液率下轴向截面压力分布云图(i=0.96)

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图 13 3种充液率下轴向截面速度矢量图(i=0.96)

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图 14 转矩特性曲线

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