一种改进的SPH固壁边界处理方法(龚凯; 刘桦)

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一种改进SPH固壁边界处理方法

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【作者】龚凯; 刘桦 【作者单位】上海交通大学船舶海洋与建筑工程学院水利论文^zzkeK-u z-U_

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!uX1U7j W0【论文摘要】 提出一种适用于光滑质点水动力学(SPH)方法的改进的边界处理方法.在这种方法中,边界粒子的压力可通过其周围的流体粒子的压力插值得到,从而改进了耦合边界法在边界上压力不准的问题.运用这种改进的边界处理方法模拟了二维方形水箱中的非线性晃荡问题.模拟结果与实验结果吻合较好,证明了此改进的边界处理方法是有效的.

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CyqC$Wm#{0【英文论文摘要】 An improved boundary treatment approach for smoothed particle hydrodynamics is presented.In this approach,the pressure of a boundary particle is obtained by interpolation using the pressure of fluid particles in the near boundary area around it,and the boundary particle pressure is used in solving the momentum equations.This boundary treatment is applied in SPH model to simulate the nonlinear sloshing in a rectangular tank.The free surface elevation at a wave probe is in good agreement with the experimental results.However,the results of the old approach are not good. It shows that this approach of boundary treatment is a good choice for SPH model.水利论文"[ hTtR

;m/ek%yPe0【论文关键词】 光滑质点水动力学(SPH); 边界处理; 晃荡水利论文uE#Y3ug/e5xe1i
【英文论文关键词】 Smoothed Particle Hydrodynamics(SPH); boundary treatment; sloshing problem水利论文!i7y{Lr+]
【基金】博士点基金项目(20060248046);; 国家自然科学基金项目(10572093)资助.水利论文"w.otiD8^ gu
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TAG: 刘桦 SPH 龚凯 改进
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