کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5011771 1462655 2017 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A residual-based h-adaptive reconstructed discontinuous Galerkin method for the compressible Euler equations on unstructured grids
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
A residual-based h-adaptive reconstructed discontinuous Galerkin method for the compressible Euler equations on unstructured grids
چکیده انگلیسی
In this paper, a residual-based h-adaptive high-order reconstructed DG (rDG) method based on the hybrid reconstruction strategy is developed for solving the compressible Euler equations on unstructured grids. The proposed method combines the advantages of high-order rDG discretization with appropriate residual-based error estimation techniques and h-adaptive refinement strategies, which exhibits its superior potential compared to the underlying DG methods. To be specific, a third-order hybrid rDG(p1p2) method has been carefully designed and evaluated on incompatible quadrilateral grids with hanging nodes in order to preserve 2-exactness property during the implementation of mesh refinement and coarsening. A residual-based error estimator is used as local error indicator during the h-adaptive procedures. A number of test cases are presented to assess the performance of the high-order h-adaptive rDG method. The hybrid reconstruction strategy combined with h-adaptive techniques presented in this work demonstrates promise for improving the level of accuracy and reducing the computational cost for numerical simulations of compressible inviscid flows.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Fluids - Volume 156, 12 October 2017, Pages 470-484
نویسندگان
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