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A Numerical Method for Solving Matrix Coefficient Heat Equations withInterfaces

Published online by Cambridge University Press:  10 November 2015

Liqun Wang
Affiliation:
Department of Mathematics, China University of Petroleum (Beijing), Beijing, 102249, China
Liwei Shi*
Affiliation:
Department of Science and Technology Teaching, China University of Political Science and Law, Beijing, 102249, China
*
*Corresponding author. Emailaddresses: wliqunhmily@gmail.com (L.-Q. Wang), sliweihmily@gmail.com (L.-W. Shi)

Abstract

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In this paper, we propose a numerical method for solving the heat equations withinterfaces. This method uses the non-traditional finite element method togetherwith finite difference method to get solutions with second-order accuracy. It iscapable of dealing with matrix coefficient involving time, and the interfacesunder consideration are sharp-edged interfaces instead of smooth interfaces.Modified Euler Method is employed to ensure the accuracy in time. More than1.5th order accuracy is observed for solution with singularity (secondderivative blows up) on the sharp-edged interface corner. Extensive numericalexperiments illustrate the feasibility of the method.

Information

Type
Research Article
Copyright
Copyright © Global-Science Press 2015