A volume of fluid method based ghost fluid method for compressible multi-fluid flows
A volume of fluid method based ghost fluid method for compressible multi-fluid flows
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DOI：
10.1016/j.compfluid.2013.11.013
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发表时间：
2014-02
影响因子：
2.8
通讯作者：
Wurigen Bo;J. Grove
中科院分区：
文献类型：
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作者：
Wurigen Bo;J. Grove
在自适应网格加密(AMR)环境下，提出了一种可压缩多流体流动的Ghost流体方法，其中流体体积法用于跟踪界面。给出了各种数值算例，将该方法与压力-温度平衡法和非平衡温度混合胞法的界面捕捉方法进行了比较。研究发现，这两种混合模型都不能通过高声阻抗失配界面产生准确的强激波折射结果。结果表明，该方法具有较强的稳健性，可以在多种流型下提供较为合理的计算结果。流体解算器与流体体积法之间的幽灵流体耦合被设计成在AMR网格上的任意空间维度上简单且一致的。
A ghost fluid method for compressible multi-fluid flows is presented in an adaptive mesh refinement (AMR) environment, where the volume of fluid method is used to track the interface. Various numerical examples are presented to compare the proposed method with interface capturing methods using pressure–temperature equilibrium and non-equilibrium temperature mixed cell approaches. It is found both mixing models are unable to generate accurate results for strong shock refractions through high acoustic impedance mismatch interfaces. The proposed method is found to be quite robust and can provide relatively reasonable results across a wide variety of flow regimes. The ghost fluid coupling between the fluid solver and the volume of fluid method is designed to be simple and consistent in any spatial dimension on AMR grid.