基于长程力的SPH方法固壁边界处理
发布时间：2018-08-01 08:10
【摘要】：将近场动力学(PD)中的长程力引入光滑粒子流体动力学(SPH)的固壁边界处理模型中,给出一种适合SPH方法边界处理的新方法。通过液柱坍塌、Poiseuille流、水铸造充型仿真和土体崩塌4个算例对该方法的有效性进行验证。结果表明:该方法能很好地解决粒子非物理穿透边界;能客观反映真实的边界作用;对于复杂几何边界和具有材料强度的动力学问题也相当有效。
[Abstract]:The long term force in near-field dynamics (PD) is introduced into the solid wall boundary treatment model of smooth particle hydrodynamic (SPH), and a new method suitable for SPH boundary treatment is presented. The effectiveness of the method is verified by four examples of liquid column collapse Poiseuille flow, water casting mold filling simulation and soil collapse. The results show that this method can solve the nonphysical boundary of particles well, can objectively reflect the real boundary action, and is also effective for complex geometric boundaries and dynamic problems with material strength.
【作者单位】： 河海大学力学与材料学院;黄冈师范学院数理学院;
【基金】：国家自然科学基金(11172088) 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)
【分类号】：O35
本文编号：2156879
[Abstract]:The long term force in near-field dynamics (PD) is introduced into the solid wall boundary treatment model of smooth particle hydrodynamic (SPH), and a new method suitable for SPH boundary treatment is presented. The effectiveness of the method is verified by four examples of liquid column collapse Poiseuille flow, water casting mold filling simulation and soil collapse. The results show that this method can solve the nonphysical boundary of particles well, can objectively reflect the real boundary action, and is also effective for complex geometric boundaries and dynamic problems with material strength.
【作者单位】： 河海大学力学与材料学院;黄冈师范学院数理学院;
【基金】：国家自然科学基金(11172088) 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)
【分类号】：O35
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