THE MODIFIED GHOST FLUID METHOD
THE MODIFIED GHOST FLUID METHOD
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DOI：
10.1142/9781860949524_0027
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发表时间：
2002-12
期刊：
影响因子：
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通讯作者：
T. Liu;K. C. Hung;B. Khoo
中科院分区：
文献类型：
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作者：
T. Liu;K. C. Hung;B. Khoo
由于材料界面处的冲击折射模式高度依赖于材料特性，因此直接使用 Fedkiw 等人 [1] 开发的 GFM 可能会导致冲击折射特性在某种程度上仅与均质介质相关，而无法捕获异质介质预期的那些特征。这可能会导致在模拟强冲击冲击材料界面时结果不准确甚至失败。在这项工作中，我们将使用 Liu 等人 [2] 开发的近似黎曼问题求解器，提出一种具有预测幽灵流体状态的改进 GFM (MGFM)。人们发现 MGFM 比原始 GFM 更加稳健，并且与问题相关性更少。
Since the pattern of shock refraction at a material interface depends highly on material properties, a direct use of the GFM developed by Fedkiw et al [1] can result in shock-refraction characteristic somewhat only pertinent for a homogeneous medium while not captured those features as expected for a heterogeneous medium. This may lead to inaccurate results or even failure during the simulation of a strong shock impacting on a material interface. In this work, we will propose a modified GFM (MGFM) with a predicted ghost fluid status using the approximate Riemann problem solver developed by Liu et al [2]. The MGFM is found to be far more robust than the original GFM and less problem-related.