Experimental Study on the Influence of Stilling Sill on the Sill-control Hydraulic Jump of Stilling Basin with Drop Sill
The design of stilling basin with a drop sill has always been a hot issue in the field of water conser-vancy projects.A reasonable design of stilling basin can ensure considerable energy dissipation in a short dis-tance.In this paper,the influence of different heights and different positions of sills on the hydraulic jump in the stilling basin is studied by model tests,and compared with the same hydraulic jump in the stilling basin without the sill.The results show that the addition of the sill can effectively shorten the length,reduce the con-jugate water depth ratio and increase the energy dissipation rate of hydraulic jump.With the decrease of the distance between the sill and the jump head or the increase of the height of the sill,the sill plays an increasingly important role in reducing the hydraulic jump length,the conjugate water depth ratio and increasing the energy dissipation rate.At the same time,the empirical formulas of relative hydraulic jump length,conjugate water depth ratio and energy dissipation rate are obtained by dimensionless analysis under different positions and height conditions.The research results can provide reference for the design of similar hydraulic structures.
Hydraulic jumpStilling sillStilling basinModel test
国家科技期刊平台
NSTL
万方数据
维普
