Shock waves and water wing in slit-type energy dissipaters

The slit-type energy dissipater（STED）is widely used in hydraulic projects of high water head,large discharge,and narrow river valley,thanks to its simple structure and high efficiency.However,the water wing caused by the shock waves in the contraction section of the STED may bring about harmful effe...

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Veröffentlicht in:	Journal of hydrodynamics. Series B 2017-06, Vol.29 (3), p.504-509
1. Verfasser:	黄国兵胡晗王才欢杜兰
Format:	Artikel
Sprache:	eng
Schlagworte:	Engineering Engineering Fluid Dynamics hydraulic modelling Hydrology/Water Resources Numerical and Computational Physics shock wave Simulation Slit-type energy dissipater (STED) water wing 冲击波大流量收缩段水翅消能工简化公式缝隙式高水头
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Beschreibung
Zusammenfassung:	The slit-type energy dissipater（STED）is widely used in hydraulic projects of high water head,large discharge,and narrow river valley,thanks to its simple structure and high efficiency.However,the water wing caused by the shock waves in the contraction section of the STED may bring about harmful effects.A coefficient is introduced for the application of Ippen？s theory in the STED.The expression of the coefficient is experimentally obtained.Simplified formulas to calculate the shock wave angle and the water wing scope are theoretically derived,with relative errors within 5%.
ISSN:	1001-6058 1878-0342
DOI:	10.1016/S1001-6058(16)60762-X