代玉强

个人信息Personal Information

副教授

博士生导师

硕士生导师

主要任职:无

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:化工学院

学科:化工过程机械. 流体机械及工程. 安全科学与工程

办公地点:大连理工大学化工实验楼H-515

联系方式:公众号:www_r718_net daiyuqiang@dlut.edu.cn

电子邮箱:daiyuqiang@dlut.edu.cn

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Flow-field analysis and performance prediction of pressure-exchange ejector

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论文类型:会议论文

发表时间:2011-05-28

收录刊物:EI、CPCI-S、Scopus

卷号:236-238

页面范围:1587-1592

关键字:pressure exchange; ejector; pressure wave; numerical simulation

摘要:In order to transfer energy between two fluids directly and more efficiently, a nove pressure-exchange ejector was designed, and a multi-period numerical model considering leakage and gradual opening and closing of the ports was set up. The numerical model was validated by experiment and results proved that it could capture the shock wave accurately and predict the performance of pressure-exchange ejector effectively. The pressure waves in one working cycle and the flow field were displayed based on numerical simulation. Results shew that the energy was transfered by pressure waves and the vortexes generated during gradual opening and closing process led to a significant mixing between fluids and a distortion contact interface. Finally the effects of rotary speed and the gaps between ports and channels were investigated. With the increase of the inlet gap, the performance of the device reduced, while the outlet gap had a slight influence on performance. Besides, there was an optimal rotary speed for a fixed geometrical arrangement.