doi:

DOI: 10.3724/SP.J.1201.2011.01036

South-to-North Water Diversion and Water Science & Technology (南水北调与水利科技) 2011/9:1 PP.36-39

Experimental Study on Characteristic of Pressure Distribution about the Falling-sill and Expanding Bottom-flow Energy Dissipater


Abstract:
Based on the method of hydraulic test the influence of expansion ratio,depth of the falling-sill and the flowing-in Froude number on the hydro-dynamic pressure in impact area of the stilling basin bottom is analyzed emphatically. The research results show choosing the appropriate expansion ratio,depth of the falling-sill and the flowing-in Froude number can lower the hydraulics indicators of the stilling basin bottom and the sidewall effectively in the falling-sill and expanding bottom-flow energy dissipater. Under the optimum combination they can not only keep the energy dissipate ratio higher but also can keep the hydro-dynamic pressure lower to avert the bottom plates from levee slipping in impact area of the stilling basin bottom and the sidewall.

Key words:hydraulics,pressure distribution,experimental study,falling-sill and expanding bottom-flow energy dissipater,Froude number Fr0,expansion ratio,depth of the falling-sill

ReleaseDate:2014-07-21 15:58:53



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