Based on the idea of quasi-interpolation and radial basis functions approximation, a numerical method is developed to quasi-interpolate the forcing term of di erential equations by using radial basis functions. A highly accurate approximation for the solution can then be obtained by solving the corr
Solving Stiff Differential Equations with the Method of Patches
โ Scribed by David Brydon; John Pearson; Michael Marder
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 241 KB
- Volume
- 144
- Category
- Article
- ISSN
- 0021-9991
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โฆ Synopsis
We introduce a new method for solving very stiff sets of ordinary differential equations. The basic idea is to replace the original nonlinear equations with a set of equally stiff equations that are piecewise linear, and therefore can be solved exactly. We demonstrate the value of the method on small systems of equations for which some other methods are inefficient or produce spurious solutions, estimate error bounds, and discuss extensions of the method to larger systems of equations and to partial differential equations.
๐ SIMILAR VOLUMES
When the s-stage fully implicit Runge}Kutta (RK) method is used to solve a system of n ordinary di!erential equations (ODE) the resulting algebraic system has a dimension ns. Its solution by Gauss elimination is expensive and requires 2sn/3 operations. In this paper we present an e$cient algorithm,