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Published online by Cambridge University Press: 10 November 2015
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.