An adaptive mesh method with variable relaxation time

doi:10.1016/j.jfranklin.2006.02.014

An adaptive mesh method with variable relaxation time

2007-08-01

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DOI：10.1016/j.jfranklin.2006.02.014

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Moving mesh partial differential equations have been widely used in the last decade for solving differential equations exhibiting large solution variations such as shock waves and boundary layers. In this paper, we have applied a dynamic adaptive method for solving time-dependent differential equations. The mesh velocities are governed by an equation in which a relaxation time is employed to move nodes in such a way that they remain concentrated in regions of rapid variation of the solution. A numerical example involving a blow-up problem shows the advantage of using a variable relaxation time over a fixed one. (c) 2006 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.

Keyword:

moving mesh method

blow-up problem

relaxation time

An adaptive mesh method with variable relaxation time

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