Interior penalty bilinear IFE discontinuous Galerkin methods for elliptic equations with discontinuous coefficient

被引:0
|
作者
Xiaoming He
Tao Lin
Yanping Lin
机构
[1] Virginia Tech,Department of Mathematics
[2] Hong Kong Polytechnic University,Department of Applied Mathematics
[3] University of Alberta,Department of Mathematical and Statistics Science
关键词
Adaptive mesh; discontinuous Galerkin; immersed interface; interface problems; penalty;
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摘要
This paper applies bilinear immersed finite elements (IFEs) in the interior penalty discontinuous Galerkin (DG) methods for solving a second order elliptic equation with discontinuous coefficient. A discontinuous bilinear IFE space is constructed and applied to both the symmetric and nonsymmetric interior penalty DG formulations. The new methods can solve an interface problem on a Cartesian mesh independent of the interface with local refinement at any locations needed even if the interface has a nontrivial geometry. Numerical examples are provided to show features of these methods.
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页码:467 / 483
页数:16
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