Abstract
This paper presents a precise method for solving singularly perturbed boundary-value problems with the boundary layer at one end. The method divides the interval evenly and gives a set of algebraic equations in a matrix form by the precise integration relationship of each segment. Substituting the boundary conditions into the algebraic equations, the coefficient matrix can be transformed to the block tridiagonal matrix. Considering the nature of the problem, an efficient reduction method is given for solving singular perturbation problems. Since the precise integration relationship introduces no discrete error in the discrete process, the present method has high precision. Numerical examples show the validity of the present method.
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Communicated by Xing-ming GUO
Project supported by the National Natural Science Foundation of China (No. 10672194) and the China-Russia Cooperative Project (the National Natural Science Foundation of China and the Russian Foundation for Basic Research) (No. 10811120012)
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Fu, Mh., Cheung, Mc. & Sheshenin, S.V. Precise integration method for solving singular perturbation problems. Appl. Math. Mech.-Engl. Ed. 31, 1463–1472 (2010). https://doi.org/10.1007/s10483-010-1376-x
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DOI: https://doi.org/10.1007/s10483-010-1376-x
Key words
- singular perturbation problem
- first-order ordinary differential equation
- two-point boundary-value problem
- precise integration method
- reduction method