基于SPH方法的自由水面溢流过程开边界数值模拟

Open boundary conditions numerical simulation of free surface-flow based on SPH

SPH方法是近年发展起来的流体数值模拟的一种新方法。目前,SPH方法流体模拟主要是经典的激波、Poiseuille流、Couette流、腔内剪切流及像溃坝一样的自由表面流动。均属于初始给定所有粒子的闭边界数值模拟。该文依据SPH方法,采用周期运动边界,实现了溢流坝自由表面流开边界数值模拟。计算水面线与物模实测结果吻合较好。

SPH（Smooth Particle Hydrodynamics）is a new method in fluid numerical simulation,The SPH method primary applied to flow simulation such as shock wave,Poiseuille flow,Coquette flow,cavity shear flow and break-dam flow,They are close boundary conditions numerical simulation that has given all initial particle at beginning. In this paper, by using of periodic motion boundary conditions, Open boundary conditions numerical simulation of free-surface flow on over-flow dam has been achieved. The computed water surface profile is well agree with physical model results.