维普中文期刊产品整合服务

One-dimensional/three-dimensional analysis of transient cavitating flow in a venturi tube with special emphasis on cavitation excited pressure fluctuation prediction

查看全文 作　　者：WANG [1,2,3]LuYan;JI [2,4]Bin;CHENG [1,2,3]HuaiYu;WANG [1,2,3]Jiong;LONG [1,2,3,4]XinPing 高影响力作者 机构地区：[1]Key Laboratory of Hydraulic Machinery Transients,Ministry of Education,Wuhan University,Wuhan 430072,China;[2]Key Laboratory of Hubei Province for Waterjet Theory and New Technology,Wuhan 430072,China;[3]School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China;[4]State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China高影响力机构 出　　处：《Science China(Technological Sciences)》索引2020年第63卷第2期,共11页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51679169,11472197)。 摘　　要：The large eddy simulation(LES) method is used to simulate cavitating flow in a venturi tube. The simulated results agree fairly well with the experimental data. To quantitatively describe the relationship between cavitation evolution and excited pressure fluctuation in the venturi tube, a modified prediction model is proposed and its accuracy is verified by the LES results. Based on the original one-dimensional model for the external cavitating flow around a hydrofoil, this model is corrected according to the internal cavitating flow characteristics in the venturi tube. The results show that the original one-dimensional model ignores the choking effect of cavitating flow, which is obvious in a venturi tube with a narrow flow channel, thus leading to an inaccurate prediction of pressure fluctuation in the venturi tube. The modified model can significantly overcome its deficiencies and improve the accuracy of the pressure fluctuation prediction, providing a theoretical basis and guidance for engineering application to controlling the pressure fluctuation in a venturi tube or for other internal flows. 关 键 词：VENTURI tube LES modified model CAVITATION pressure FLUCTUATION
相关文献

参考文献(52)

引证文献(5)

耦合文献(114)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费