Dynamic refinement and boundary contact forces in SPH with applications in fluid flow problems
Dynamic refinement and boundary contact forces in SPH with applications in fluid flow problems
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DOI：
10.1002/nme.2010
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发表时间：
2007-10-15
影响因子：
2.9
通讯作者：
Bonet, J.
中科院分区：
文献类型：
--
作者：
Feldman, J.;Bonet, J.
提出了一种光滑粒子流体动力学（SPH）中动态粒子细化的一般方法。候选粒子被分裂成几个“子”粒子根据一个给定的细化模式集中在原始粒子。通过求解一个非线性极小化问题，得到子粒子的最优质量分布，从而减小引入到底层密度场中的误差。这个过程必然保持系统的质量。能量和动量守恒的结果也进行了讨论。版权所有（c）2007约翰威利父子有限公司。
This paper presents a general method for dynamic particle refinement in smoothed particle hydrodynamics (SPH). Candidate particles are split into several 'daughter' particles according to a given refinement pattern centred about the original particle. Through the solution of a non-linear minimization problem the optimal mass distribution of the daughter particles is obtained so as to reduce the errors introduced to the underlying density field. This procedure necessarily conserves the mass of the system. Conservation of energy and momentum results are also discussed. Copyright (c) 2007 John Wiley & Sons, Ltd.