| 两种多介质流体可压缩流动界面捕捉方法的数值研究 |
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| 引用本文： | 马东军,蔡勇,孙德军,尹协远.两种多介质流体可压缩流动界面捕捉方法的数值研究[J].中国科学技术大学学报,2002,32(2):186-193. |
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| 作者姓名： | 马东军 蔡勇 孙德军 尹协远 |
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| 作者单位： | 中国科技大学力学和机械工程系,安徽合肥,230027 |
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| 基金项目： | ThisprojectissupportedbytheNaturalScienceFoundationofChina (10 172 0 82 ) |
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| 摘 要： | 本文比较研究两种多介质流体可压缩流动界面捕捉方法。其中混合模型界面捕捉方法将高精度PPM格式应用到多介质体积分数形式Euler方程组，用双波近似求解一般刚性气体状态方程Riemann问题；Level-Set界面捕捉方法应用无数值耗散的Ghost-Fluid-Method，并用WENO格式求解Euler运动方程和Level-Set演化方程。本文给出了一维气液接触间断，气液Riemann问题，激波接触间断相互作用，以及二维Richtmyer-Meshkov不稳定性的计算结果。
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| 关 键 词： | 多介质流体 可压缩流动 界面捕捉方法 Ghost－Fluid－Method 高阶Godunov格式 Eulev方程组 PPM格式 |
Numerical Study of Interfacial Methods for Compressible Multi-Fluids |
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| Abstract.Numerical Study of Interfacial Methods for Compressible Multi-Fluids[J].Journal of University of Science and Technology of China,2002,32(2):186-193. |
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| Authors: | Abstract |
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| Abstract: | In this paper, two interface capturing methods are studied for multi-fluid flows. The mixture-type interface capturing algorithm uses a simple volume-fraction model Euler equations solved by a high-resolution Piecewise-Parabolic-Method(PPM) with multi-fluid Riemann solver. The level set interface capturing method uses a narrow band Ghost-Fluid-Method(GFM), as well as Weighted-ENO scheme to compute Euler fluid motion equations and Hamilton-Jacobi level-set evolution equation. Several test examples are presented and compared for one and two dimensions, which show the feasibility of the two methods as applied to various multi-fluid problems. |
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| Keywords: | compressible multi-fluid flows interface capturing method Ghost Fluid Method high-order Godunov scheme |
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