摘要
边界排斥力法是光滑粒子流体动力学(SPH)固壁边界处理的方法之一,但由于缺乏统一的排斥力模型而制约其广泛应用。考虑将近场动力学(Peridynamics,PD)中描述颗粒间接触作用的短程排斥力引入到固壁边界处理模型中,提出一种新型SPH方法边界排斥力模型。通过Couette流和溃坝2个算例验证了排斥力模型的有效性。排斥力表达式简单,参数易于给定,为SPH方法中固壁边界处理提供新思路。
Boundary repulsive method is one of the methods for solid boundary treatment in smoothed particle hydro-dynamics （SPH） , but the method is difficult to be widely applied due to the lack of unified repulsive model. The short-range repulsive force which describes the acting force between granules in Peridynamic （PD） is introduced to solid boundary treatment model to build a new boundary repulsive model in the framework of SPH. The reliability of the method is verified by two numerical simulation examples including Couette flow and dam-break. Moreover, the repulsive formulation is simple and the parameters are easy to be given. Therefore, the present method provides a new alternative for solid boundary treatment in SPH.
出处
《长江科学院院报》
CSCD
北大核心
2017年第7期54-59,共6页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金项目(61462096)
江苏省普通高校研究生科研创新计划项目(KYZZ16_0268)
黄冈师范学院高级别培育项目(201617603)
