Energy dissipation and hydraulics characteristics of multi-horizontal submerged jets

In this paper,the multi-horizontal submerged jets(MHSJ),a good design of energy dissipation,is presented.The MHSJ comes into being by the special ways with horizontal and parallel jets and a needed distance to the bottom of bed when jets enter into the still downstream basin.In this arrangement,the number of strong stress and the turbulence among water surface,the high speed flow and the bottom of basin are twice more than enlarge or shorten jump.Therefore,the MHSJ is a kind of efficient energy dissipation in the term of making use of the strong stress and the 3-D turbulence vortexes.The hydraulic characteristics and dissipated energy ratio are studied theoretically,and the formula to calculate the conjugate water depth and energy dissipated ratio are obtained.These results show that the MSBJ is a good dissipation energy type with less local precipitation,more dissipated energy rate,well applicability,and wide practicability.