流体机械

2011, v.39;No.471(09) 38-44

[打印本页] [关闭]
本期目录(Current Issue) | 过刊浏览(Past Issue) | 高级检索(Advanced Search)

泵空化流数值计算研究现状及展望
Numerical Research Status and Prospects of Cavitating Flow in a Pump

刘厚林;刘东喜;王勇;杜辉;徐欢;
LIU Hou-lin,LIU Dong-xi,WANG Yong,DU Hui,XU Huan(Jiangsu University,Zhenjiang,Jiangsu 212013,China)

摘要(Abstract):

空化是一种包含气液相间质量传输的非定常可压缩多相湍流流动现象,它是泵性能和效率下降的主要原因。空化流动的计算主要涉及空化模型和湍流模型两个方面。本文概述了空化模型的一些基本理论,并比较了各个空化模型的优缺点;简要分析了湍流模型对空化流计算的影响;介绍了这些模型在泵空化流计算中的应用;最后展望了泵空化流计算模型的发展方向。
Phenomenologically,cavitation often involves complex interactions of turbulence and phase-change dynamics,large density variation,mass transfer between phases and pressure fluctuations.It may cause not only the degradation of the pump performance but efficiency.Turbulent cavitating flow computations need to address both turbulence and cavitation modeling issues.The basic theories of the cavitation models summarized in this article,and also the advantages and disadvantages of these models are compared.Additionally,the influence of the turbulence models in numerical simulation of cavitating flow was analyzed and the application of these models in numerical simulation of cavitating flow in a pump was introduced.At last,the development direction of the computational models of cavitating flow in a pump is discussed.

关键词(KeyWords): 泵;空化;空化模型;湍流模型;研究现状
pump;cavitation;cavitation model;turbulence model;research status

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 刘厚林;刘东喜;王勇;杜辉;徐欢;
LIU Hou-lin,LIU Dong-xi,WANG Yong,DU Hui,XU Huan(Jiangsu University,Zhenjiang,Jiangsu 212013,China)

Email:

DOI:

参考文献(References):

扩展功能
本文信息
服务与反馈
本文关键词相关文章
本文作者相关文章
中国知网
分享