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《Journal of Irrigation and Drainage》 2010-02
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The Impact Pressure Characteristic Research on Jet-flows of High Arc Dams in Gorge Areas

ZHANG Chun-man1,2,LIU Pei-qing1,LIU Xian-liang2(1.The Institute of Fluid Mechanics,Beijing University of Aeronautics and Astranautics,Beijing 100083,China;2.Yellow River Conservancy Technical Institute,Kaifeng 475001,China)  
The experimental result shows that the transverse shrinkage and longitudinal diffusing of the discharging flow is remarkable,and the jet-flows cross in air without any collision;meanwhile,the longitudinal tensile appearance is obviously,and the strong turbulence shear area of the water cushion pond increases,which effectively decreases the impact pressure endured by the bottom of the water cushion pond.Meanwhile,the experiment result of the four different deep-hole jet-flows shows that the maximum impact pressure exerted by bottom jet-flows in the lower part of the river decreases respectively following the flow-rate increases alongside upper and lower part of the river.At the same time,the quicker the flow-rate increases,the less pressure to the bottom of the water cushion pond becomes.
【Fund】: 国家自然基金项目(10772015);; 自然科学基金重点项目(50539060)
【CateGory Index】: TV135
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