A gas kinetic scheme for the Baer-Nunziato two-phase flow model

详细信息    查看全文

• 作者：Liang Pan ; Guiping Zhao ; Baolin Tian ; Shuanghu Wang
• 关键词：Baer&ndash ; Nunziato model ; Generalized BGK model ; Gas kinetic method
• 刊名：Journal of Computational Physics
• 出版年：2012
• 出版时间：15 September, 2012
• 年：2012
• 卷：231
• 期：22
• 页码：7518-7536
• 全文大小：965 K

文摘

Numerical methods for the Baer-Nunziato (BN) two-phase flow model have attracted much attention in recent years. In this paper, we present a new gas kinetic scheme for the BN two-phase flow model containing non-conservative terms in the framework of finite volume method. In the view of microscopic aspect, a generalized Bhatnagar-Gross-Krook (BGK) model which matches with the BN model is constructed. Based on the integral solution of the generalized BGK model, we construct the distribution functions at the cell interface. Then numerical fluxes can be obtained by taking moments of the distribution functions, and non-conservative terms are explicitly introduced into the construction of numerical fluxes. In this method, not only the complex iterative process of exact solutions is avoided, but also the non-conservative terms included in the equation can be handled well.