二维光滑流体粒子动力学方法模拟契形体砰击(英文)

Two-dimensional SPH Simulations of Wedge Slamming

光滑流体粒子动力学方法是一个最近发展起来的用以模拟类似液仓晃荡和砰击等大变形和离散型问题的功能强大的方法。文章通过使用光滑流体粒子动力学方法,一个钝角契形体入水的速度与压力过程被成功模拟。通过将作者的光滑流体粒子动力学数值模型与Zhao的物理实验结果作对比后证明该模型有效并被成功校核。

Smoothed Particle Hydrodynamics （SPH） is a recently developed powerful mesh free particle method, originally developed for astrophysical simulations. Compared with SPH, traditional CFD methods are less effective while simulating typical nonlinear deformation and discontinuity problems such as slamming and sloshing. By using SPH method, simulations of pressure and velocity procedures of an obtuse wedge falling into the water are conducted. SPH model in this paper is well verified and calibrated based on the comparison between authors＇s results and Zhao＇s experiments. Resuits show that, though consuming longer computational time compared with traditional CFDs, SPH method is quite applicable while simulating wedge slamming problems with very high accuracies and visual similarities.