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A numerical study on the finite element solution of singularly perturbed systems of reaction-diffusion problems

机译:反应扩散问题奇摄动系统有限元解的数值研究

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We consider tile approximation of singularly perturbed systems of reaction-diffusion problems, with the finite element method. The solution to such problems contains boundary layers which overlap and interact, and the numerical approximation must take this into account in order for the resulting scheme to converge uniformly with respect to the singular perturbation parameters. In this article we conduct a numerical study of several finite element methods applied to a model problem, having as our goal their assessment and the identification of a high order scheme which approximates the solution at all exponential rate of convergence, independently of the singular perturbation parameters. (c) 2006 Elsevier Inc. All rights reserved.
机译:我们使用有限元方法考虑反应扩散问题的奇摄动系统的平铺逼近。对此类问题的解决方案包括边界层,这些边界层重叠且相互作用,并且数值逼近必须考虑到这一点,以使生成的方案相对于奇异摄动参数均匀收敛。在本文中,我们对应用于模型问题的几种有限元方法进行了数值研究,其目标是对它们进行评估并确定一种高阶方案,该方案在所有指数收敛速率下都近似求解,而与奇异摄动参数无关。 (c)2006 Elsevier Inc.保留所有权利。

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