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Research Article Open Access
This paper deals with solving Dirichlet’s problem with nonhomogenous boundary conditions, using the method of large singular finite elements for Laplace’s equation in a L-shaped domain. This method is particularly suitable for solving singular problems since the analytical form of singularities has been integrated in the approximate solution. It is unique in that the equations are exactly verified except on those areas where internal segments are approached with great precision. Results are compared with those obtained through finite elements method by using the COMSOL software. They dealt with solution u values and those of its first derivatives. Both methods give results that align quite well everywhere, except near singularities where significant differences exist.
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Author(s): Ouigou M Zongo Sieacute Kam Kalifa Palm and Alioune Ouedraogo
Singular points, least squares, large elements, finite elements., least squares