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2012 年 12 月 18 日
Seminar - Improved CESE Method and its Application by Professor De-Liang Zhang

Date:   18 December 2012 (Tuesday)

Time:   3:00 pm – 4:00 pm

Venue:  EF305, The Hong Kong Polytechnic University

Abstract:

The space-time Conservation Element and Solution Element (CE/SE) method is a novel numerical framework for solving hyperbolic conservation laws. It substantially differs from other traditional well-established methods. However, the mesh construction of original two-dimensional CE/SE method is very complicated and difficult to extend to three-dimensional (3D) situations. In the paper, an improved CE/SE method has been constructed by adopting another general hexahedral mesh for 2D and 3D flow simulation. The improved CE/SE scheme with two-order accuracy was deduced. The numerical results of some basic problems were discussed and compared with corresponding experiment results. The accuracy of the new scheme is examined. It is shown that the new scheme has features of high resolution, simple form and robustness. Finally, we extend the new scheme to apply to gaseous compressible flow, incompressible viscous flow, chemical reaction flow, multiphase flow and Flows in Porous Media. So the improved CE/SE scheme open up bright prospective for the application of scientific research and engineering technology.

 

Biosketch:

Prof. Zhang is a professor working at the Institute of Mechanics, Chinese Academy of Sciences. During 1986-1990 he studied and worked at Institute for Aerospace Studies, University of Toronto, Canada. In 1994 he worked  at Gunma University and Tohoku University Japan. In 1999 he visited and lectured at Aachen University, German. During 2008-2009 he worked at Far-East University of  Science and Technology, Tainan, Taiwan.  Professor Zhang is Adjunct of University of science and technology of China , Peking University and Nanjing University of Science and technology. And he is also the Member of Computational Mechanics and Explosion Mechanics Committee, Chinese Society of Theoretical and Applied Mechanics and the editors for Journal of Chinese Computational Mechanics and Journal of Chinese Vibration and Shock. Professor Zhang is engaged mainly in Computational mechanics, Explosion & Safety, Fluid and Gas dynamics. The major research interests include Shock Wave Dynamics, Detonation Physics, Chemical Flow Dynamics, Numerical Method, Computational Mechanics & its Application. He has published over 150 papers  in international & national journals and conferences.