主  办：爆炸科学与技术国家重点实验室

         安全与防护协同创新中心

报告题目：Towards Accurate Simulation of Discontinuities for the Multiphase Flow and Detonation Problems  

报告人：Prof. Yang-Yao Niu  

        Tamkang University

时间：2019年9月27日下午15:30

地点：北京理工大学3号教学楼146会议室

报告摘要：

     In the current study, a less-dissipative hybrid reconstruction of the cell-interface variables is proposed to evaluate the current high-resolution shock capturing schemes. Several multi-equation type Euler equations for multi-component flows and detonation problems are selected as the considered flow models. The accuracy of the proposed MUSCL method with the nearly discontinuous function as the THINC method and the original MUSCL or PPM methods is verified for capturing detonation waves, shock waves, expansion fans and material interfaces. Numerical results of all benchmark tests show that the proposed hybrid reconstruction of interface variable is more accurate than the original MUSCL type methods. Especially, the resolution of detonation waves, the expansion fans and interfaces on coarse grids is greatly improved by the methodology of the hybrid type MUSCL with the discontinuous function method.