A short note on Dynamic Stabilization of Moving Particle Semi-implicit method
A short note on Dynamic Stabilization of Moving Particle Semi-implicit method
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DOI：
10.1016/j.compfluid.2013.05.001
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发表时间：
2013-08
影响因子：
2.8
通讯作者：
N. Tsuruta;Abbas Khayyer;H. Gotoh
中科院分区：
文献类型：
--
作者：
N. Tsuruta;Abbas Khayyer;H. Gotoh
本文介绍了一种简单有效的MPS法动态稳定方案。新方案（简称DS）细致地再现了足够的排斥力，以衰减颗粒间渗透，从而稳定了计算，即使对于以拉应力状态为特征的高度变形流动也是如此。通过执行一组简单的两相流模拟，我们还显示了简化/反对称MPS压力梯度模型的不适当性，因为它们可能导致主要的过大排斥力，从而无法模拟主要的流动特征。DS方案提供了物理上健全和计算上稳定的这种流动的模拟。
This technical note presents a simple and effective scheme for Dynamic Stabilization of MPS method. The new scheme, abbreviated as DS, reproduces meticulously adequate repulsive forces to attenuate the interparticle penetration and thus stabilizes the calculations, even for highly deformed flows characterized by tensile stress states. By performing a set of simple two-phase flow simulations, we also show the inappropriateness of the simplified/anti-symmetric MPS pressure gradient models as they may result in predominant excessive repulsive forces and thus being unable to simulate the main flow features. The DS scheme is shown to provide physically sound and computationally stable simulations of such flows.