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arXiv 1602.07913physics.comp-phphysics.flu-dyn
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多相光滑粒子流体动力学中假界面碎裂的进一步研究

Further investigation of the spurious interface fragmentation in multiphase Smoothed Particle Hydrodynamics

Kamil Szewc, Michał Tadeusz Lewandowski

摘要:

本文介绍了在多相SPH假界面碎裂问题的进一步调查的结果。为了消除产生的不稳定性,许多作者介绍了人工界面校正程序。在本文中,我们表明,界面不稳定性是物理的,界面校正程序的引入可能会导致非物理的解决方案。我们还解释了参数$\varepsilon$和$h$之间令人困惑的关系。分析的基础上进行的稳定性分析和数值计算,使用SPH和流体体积(VOF)的方法。

英文摘要:

This article presents results of further investigation of the problem of spurious interface fragmentation in the multiphase SPH. In order to remove arising instabilities, many authors introduced the artificial interface correction procedure. In the present paper we show that the interface instabilities are physical and the introduction of the interface correction procedure may leads to non-physical solutions. We also explain the puzzling relation between the parameters $\varepsilon$ and $h$. The analysis is performed on the basis of the stability analysis and numerical calculations using SPH and Volume Of Fluid (VOF) approach.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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