模拟突放水体问题的SPH方法

采用SPH方法数值模拟了二维方形水箱突放水体各时刻流动的情况,计算结果表明:模拟过程中,整个水体的密度和速度值变化不大,而压强值变化比较大。数值模拟粒子分布图可以显示出各时刻整个水体的流态、各时刻闸门开启情况及闸门对周围水体流态的影响等,闸门开启的1.460 3 s时刻,闸门左侧部分水体有相对下降缓慢的特殊流态。

SPH Method for Simulating Sudden Release of Water Body

With SPH method to simulate sudden release of water body flow all time in two-dimensional water tank,the results show that during the simulation process,the value of entire water body has little changes in density and velocity,while changes greatly in pressure.The particle distribution diagram of numerical simulation can show the flow of entire water,the moment of the sluice gate opening,and the sluice gate impact to the surrounding water flow all time,etc,and the numerical simulation of particle distribution diagram shows that at the moment of 1.4603 seconds of the sluice gate opening,there is a kind of special phenomenon that part of water on the left of the sluice gate drops relatively slowly.