统一半解析边界处理SPH方法与不规则粒子分布

发布时间：2018-04-24 11:57

本文选题：SPH + 边界处理　；参考：《水动力学研究与进展(A辑)》2017年02期

【摘要】：光滑粒子流体动力学(smoothed particle hydrodynamics,SPH)方法是一种拉格朗日型无网格粒子方法,其中合适的边界处理方法一直是方法取得高精度的关键。该文介绍了一种新兴的SPH边界处理方法——统一半解析壁面边界条件处理方法(unified semi-analytical wall boundary conditions,USAW),并提出了两种不规则粒子分布。USAW边界处理方法结合不规则粒子分布能更方便地求解复杂边界问题。模拟了Couette流、静水和楔形体溃坝等算例,验证了方法处理复杂边界问题的有效性。
[Abstract]:Smooth particle hydrodynamics (particle) is a Lagrangian meshless particle method, in which the proper boundary treatment method is the key to obtain high accuracy. In this paper, a new SPH boundary treatment method, unified semi-analytical wall boundary conditions, is introduced. Two methods of irregular particle distribution. USAW boundary treatment combined with irregular particle distribution are proposed. It is convenient to solve complex boundary problems. Numerical examples of Couette flow, static water and wedge-shaped dam break are simulated to verify the effectiveness of the proposed method in dealing with complex boundary problems.
【作者单位】：上海交通大学船舶海洋与建筑工程学院;
【基金】：国家重点基础研究计划(973计划,2014CB046801)~~
【分类号】：O241.3

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