刘亚坤

个人信息Personal Information

教授

博士生导师

硕士生导师

任职 : 水利学院副院长,水力学研究所所长,工程水力学实验室主任

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:水利工程系

学科:水力学及河流动力学

联系方式:0411-84708509

电子邮箱:liuyakun@dlut.edu.cn

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Theoretical and experimental study on the vortex at hydraulic intakes

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论文类型:期刊论文

发表时间:2015-11-02

发表刊物:JOURNAL OF HYDRAULIC RESEARCH

收录刊物:SCIE、EI、Scopus

卷号:53

期号:6

页面范围:787-796

ISSN号:0022-1686

关键字:Critical submergence; free surface vortex; particle image velocimetry (PIV); velocity distribution; vortex core radius; water surface profile

摘要:To study the characteristics of the vortex at a hydraulic intake, an experiment with a free surface vortex was conducted in a cylindrical tank. The vortex flow field was measured using particle image velocimetry (PIV) and extensive experimental data describing the vortex characteristics (radial and tangential velocity distributions, vortex core radius variation, water surface profile and circulation distribution) have been obtained and analysed. Based on the detailed experimental data, an empirical model describing the key vortex characteristics is developed. In addition, using the pressure distributions inside and outside the vortex core, a dimensionless equation for the critical submergence requiring only the Froude number and the circulation number is derived. Results using this equation are in agreement with the experimental data.