Anisotropic slope limiting for discontinuous Galerkin methods
Anisotropic slope limiting for discontinuous Galerkin methods
复制标题
间断伽辽金方法的各向异性斜率限制
DOI:
10.1002/fld.4360
复制
发表时间:
2017
影响因子:
1.8
通讯作者:
B. Reuter
中科院分区:
文献类型:
--
作者:
V. Aizinger;A. Kosik;D. Kuzmin;B. Reuter
In this paper, we present an anisotropic version of a vertex‐based slope limiter for discontinuous Galerkin methods. The limiting procedure is carried out locally on each mesh element utilizing the bounds defined at each vertex by the largest and smallest mean value from all elements containing the vertex. The application of this slope limiter guarantees the preservation of monotonicity. Unnecessary limiting of smooth directional derivatives is prevented by constraining thexandycomponents of the gradient separately. As an inexpensive alternative to optimization‐based methods based on solving small linear programming problems, we propose a simple operator splitting technique for calculating the correction factors for thexandyderivatives. We also provide the necessary generalizations for using the anisotropic limiting strategy in an arbitrary rotated frame of reference and in the vicinity of exterior boundaries with no Dirichlet information. The limiting procedure can be extended to elements of arbitrary polygonal shape and three dimensions in a straightforward fashion. The performance of the new anisotropic slope limiter is illustrated by two‐dimensional numerical examples that employ piecewise linear discontinuous Galerkin approximations. Copyright © 2017 John Wiley & Sons, Ltd.
影响因子:
1.8
作者:
G. Luttwak;J. Falcovitz
通讯作者:
J. Falcovitz
DOI:
10.1016/j.camwa.2016.08.006
发表时间:
2016-02
期刊:
Comput. Math. Appl.
影响因子:
--
作者:
Balthasar Reuter;V. Aizinger;Manuel Wieland;F. Frank;P. Knabner
通讯作者:
Balthasar Reuter;V. Aizinger;Manuel Wieland;F. Frank;P. Knabner
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
E. Fadell;S. Husseini
通讯作者:
S. Husseini