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An efficient numerical method for singularly perturbed second order ordinary differential equation | ||
| Journal of Mathematical Modeling | ||
| مقاله 3، دوره 3، شماره 1، شهریور 2015، صفحه 33-48 اصل مقاله (160.61 K) | ||
| نوع مقاله: Research Article | ||
| نویسندگان | ||
| Jugal Mohapatra* ؛ Manas kumar Mahalik | ||
| Department of Mathematics, National Institute of Technology Rourkela, India | ||
| چکیده | ||
| In this paper an exponentially fitted finite difference method is presented for solving singularly perturbed two-point boundary value problems with the boundary layer. A fitting factor is introduced and the model equation is discretized by a finite difference scheme on an uniform mesh. Thomas algorithm is used to solve the tri-diagonal system. The stability of the algorithm is investigated. It is shown that the proposed technique is of first order accurate and the error constant is independent of the perturbation parameter. Several problems are solved and numerical results are presented to support the theoretical error bounds established. | ||
| کلیدواژهها | ||
| Singular perturbation problems؛ boundary layers؛ Thomas algorithm؛ exponential fitting factor؛ uniform convergence | ||
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