【摘要】 用光滑粒子法模拟几种情况的溃坝流动,对坝外无水和有水的情况进行二维模拟,对坝外有立柱的情况进行三维模拟.流动控制方程采用雷诺平均方程模拟溃坝流动的湍流效应,采用混合长度形式的涡粘模式对控制方程进行封闭,推导其相应的光滑粒子形式的方程.模拟结果表明,数值模拟的流动特征与实验结果符合得非常好,说明发展的光滑粒子法有效.更多还原

【Abstract】 A smoothed particle hydrodynamics (SPH) method for turbulence is used to simulate dam-break flows. Several 2D and 3D dam-break flows are simulated. For turbulent effects, Reynolds-averaged Navier-Stokes equation together with eddy viscosity assumption are used. SPH results are in good agreement with reported experimental results.更多还原