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《Journal of Hydroelectric Engineering》 2012-04
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Experimental study on energy dissipation of expanding falling-sill bottom-flow energy dissipater

CHEN Zhao1,WANG Lihui2,WANG Haijun1(1.Faculty of Electric Power Engineering,Kunming University of Science and Technology, Kunming 650051;2.Yunnan Water Resources and Hydropower School,Kunming 650202)  
This paper presents an experimental study of a expanding falling-sill bottom-flow energy dissipater and an preliminary analysis on the features of energy dissipation and its mechanism.The flow patterns and structures of such bottom expanding flow in the stilling basin are analyzed in details,and the effects of energy dissipation by the falling-sill and flow expansion in terms of flow velocities near the basin's bottom and sidewall are discussed.Results show that these flow velocities are greatly dissipated along the stream owing to bottom flow expanding behind the sill,hence resulting in much greater energy dissipation.
【Fund】: 云南省自然科学基金(2006A0018M)
【CateGory Index】: TV653
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