Abstract
In this study, we present a discretization scheme based on generalized integral representation method for a numerical evaluation of an unsteady diffusion problem in a circular domain. The scheme employs the fundamental solution of the associated steady-state diffusion operator along with piecewise constant approximation for the unknown function. By its construction, our scheme does not require continuity of the approximate solution across the computational elements and thus is flexible for various partitions of the problem domain. Therefore, for numerical validation, we provide examples in the unit circle partitioned via three different manners. Examples on triangulated partitions of the unit square are also included. The derivation of the numerical scheme is straightforward and it is easy-to-program.
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