A GHOST FLUID BASED FRONT TRACKING METHOD FOR MULTIMEDIUM COMPRESSIBLE FLOWS

• Published in: Acta mathematica scientia Vol. 29; no. 6; pp. 1629 - 1646
• Main Author: 王东红 赵宁 胡偶 刘剑明
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.11.2009; College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China%College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China; College of Science,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
• Subjects: 65M60; 65Z05; front tracking method; ghost fluid method; multimedium compressible flow; Riemann problem; 一维问题; 三维问题; 初始状态; 多介质可压缩流动; 多媒体; 跟踪方法; 黎曼问题; front tracking method; 65Z05; 65M60; ghost fluid method; multimedium compressible flow; Riemann problem
• ISSN: 0252-9602; 1572-9087
• DOI: 10.1016/S0252-9602(10)60006-9

Recent years the modify ghost fluid method （MGFM） and the real ghost fluid method （RGFM） based on Riemann problem have been developed for multimedium compressible flows. According to authors, these methods have only been used with the level set technique to track the interface. In this paper, we combine the MCFM and the RGFM respectively with front tracking method, for which the fluid interfaces are explicitly tracked by connected points. The method is tested with some one-dimensional problems, and its applicability is also studied. Furthermore, in order to capture the interface more accurately, especially for strong shock impacting on interface, a shock monitor is proposed to determine the initial states of the Riemann problem. The present method is applied to various one- dimensional problems involving strong shock-interface interaction. An extension of the present method to two dimension is also introduced and preliminary results are given.