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arXiv 1909.01243math.NAcs.NA
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双参数奇摄动反应对流扩散边值问题的$hp$有限元法

An $hp$ finite element method for a singularly perturbed reaction-convection-diffusion boundary value problem with two small parameters

Irene Sykopetritou, Christos Xenophontos

摘要:

本文考虑了具有两个小参数的反应-对流-扩散型二阶奇摄动边值问题,并在所谓的{ \emph{Spectral Boundary Layer} }网格上用$hp$形式的有限元法逼近其解.我们表明,该方法一致收敛,相对于两个奇异扰动参数,在指数速率时,测量的能量范数的错误。数值例子也说明了我们的理论研究结果。

英文摘要:

We consider a second order singularly perturbed boundary value problem, of reaction-convection-diffusion type with two small parameters, and the approximation of its solution by the $hp$ version of the Finite Element Method on the so-called {\emph{Spectral Boundary Layer}} mesh. We show that the method converges uniformly, with respect to both singular perturbation parameters, at an exponential rate when the error is measured in the energy norm. Numerical examples are also presented, which illustrate our theoretical findings.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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