期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 103, 期 -, 页码 684-700出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2016.07.112
关键词
Poppet valve; Inlet pressure fluctuations; Cavitation; Water hydraulic
资金
- National Natural Science Foundation of China [10972086]
- Open Research Fund Program of Hubei Provincial Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety [2015KA03]
- Fundamental Research Funds for the Central Universities [2016YXMS266]
At high inlet pressure extent (P-avg = 20 MPa) in water hydraulic fields, the relationship between inlet pressure fluctuations and unsteady cavitation process condition inside a water hydraulic poppet valve has been numerically analyzed using a two-phase mixture model via computational fluid dynamics (CFD) software ANSYS Fluent 14.5. The effects of different inlet pressure fluctuations and a groove at valve port on unsteady cavitation process and flow field are investigated. The results reveal that under sine-wave-type inlet pressure fluctuations condition, unsteady cavitation process and flow field physical parameters show periodic changing characteristics; cavitation content inside valve port is more related to the value of amplitude A and frequency f. In a certain extent, increasing or decreasing frequency f can suppress the occurrence or enhancement of cavitation. The existence of a groove at valve port can reduce the intensity of cavitation under inlet pressure fluctuations condition. (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据