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• W3011747733 endingPage "104522" @default.
• W3011747733 startingPage "104522" @default.
• W3011747733 abstract "A high-order accurate reconstructed discontinuous Galerkin (rDG) method is developed for solving two-dimensional hydrodynamic problems in cell-centered updated Lagrangian formulation. This method is the Lagrangian limit of the unsplit rDG-ALE formulation, and is obtained by assuming the equality of the grid velocity to the fluid velocity only at cell boundaries. The conservative variables and the Taylor basis defined on the time-dependent moving mesh, provide the piece-wise polynomial expansion in the updated Lagrangian formulation. A multi-directional nodal Riemann solver is implemented for computing the grid velocity at the vertices and the numerical flux at the cell boundaries. A characteristic limiting procedure is extended from the primitive variable version to the conservative variable version, and its performance is compared with the limiter on physical variables. A number of benchmark test cases are conducted to assess the accuracy, robustness, and non-oscillatory property of the DG(P0), DG(P1) and rDG(P1P2) methods. The numerical experiments demonstrate that the developed rDG method is able to attain the designed order of accuracy and the characteristic limiting procedure outperforms the limiter on physical variables in terms of the monotonicity and symmetry preservation for shock problems." @default.
• W3011747733 created "2020-03-23" @default.
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• W3011747733 date "2020-04-01" @default.
• W3011747733 modified "2023-09-30" @default.
• W3011747733 title "A reconstructed discontinuous Galerkin method for compressible flows in Lagrangian formulation" @default.
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• W3011747733 doi "https://doi.org/10.1016/j.compfluid.2020.104522" @default.
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