| 冯峰,王强.两介质流界面-激波相互作用RKDG 方法应用分析[J].计算力学学报,2012,29(2):255~261 |
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| 两介质流界面-激波相互作用RKDG 方法应用分析 |
| The application and analysis of Runge-Kutta discontinuous Galerkin method for shock interaction with two-medium interface flow |
| 投稿时间：2010-09-24 修订日期：2011-04-05 |
| DOI：10.7511/jslx20122018 |
| 中文关键词: RKDG 虚拟流体方法 界面运动 限制器 |
| 英文关键词:RKDG GFM two-medium flow limiter |
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| 中文摘要: |
| 为精确模拟多介质流界面运动现象,采用RKDG方法结合虚拟流体方法对气-气、气-液和液-气等多种界面-激波相互作用问题展开研究。数值结果表明,RKDG方法的时空高精度特征使其能够精确、稳健地求解各种复杂界面运动问题。最后,对水下激波自由面折射问题用多种DG格式限制器进行了计算,对比了它们的间断捕捉能力。 |
| 英文摘要: |
| In order to simulate the compressible two-medium flow in high accuracy,the Runge-Kutta discontinuous Galerkin (RKDG) method combining the ghost fluid method has been applied to gas-gas/gas-liquid interface interaction with shock in this paper.The numerical results indicate that the RKDG method is a high order scheme in both temporal and spatial discretization.This method deals with multi-medium complex flow accurately and robustly.Several limiters of the discontinuous Galerkin (DG) method have been used to compute underwater shock refracting at a free surface, and the characteristic behaviors of these limiters have been analyzed in the end. |
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