CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2013, Vol. 30 ›› Issue (6): 791-798.

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Adaptive Discontinuous Galerkin Method with Lax-Wendroff Type Time Discretization and Three-dimensional Nonconforming Tetrahedral Mesh for Euler Equations

FENG Tao1,2, YU Xijun3, AN Hengbin3, CUI Xia3, WU Di4, LI Zhenzhen1,2   

  1. 1. University of Science and Technology of China, Hefei 230052, China;
    2. Graduate School of China Academy Engineering Physics, Beijing 100088, China;
    3. National Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, China;
    4. The National University of Singapore, Singapore
  • Received:2012-12-21 Revised:2013-04-22 Online:2013-11-25 Published:2013-11-25

Abstract: We present a Lax-Wendroff discontinuous Galerkin (LWDG) method combining with adaptive mesh refinement (AMR) to solve three-dimensional hyperbolic conservation laws. Compared with Runge-Kutta discontinuous finite element method (RKDG) the method has higher efficiency. We give an effective adaptive strategie. Equidistribution strategy is easily implemented on nonconforming tetrahedral mesh. Error indicator is introduced to solve three-dimensional Euler equations. Numerical experiments demonstrate that the method has satisfied numerical efficiency.

Key words: hyperbolic conservation laws, Lax-Wendroff discontinuous Galerkin method, adaptive mesh refinement

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