Abstract
Two point boundary value problems for sixth order, mildly nonlinear ordinary differential equations, are encountered in various areas of science and technology. A three-point, compact finite difference scheme for solving such problems is presented. The sixth order differential equation is treated as system of three second order equations. The scheme described can be viewed as a generalization of the Numerov-type scheme of Chawla (IMA J Appl Math 24:35–42, 1979). It is fifth order accurate on geometric meshes (non-uniform), and sixth order accurate on uniform meshes. It is applicable both to nonsingular and singular problems. Theoretical error bounds are derived and the convergence is proven. Numerical tests confirm the theoretical predictions.
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Acknowledgments
The present research work is supported by the Polish Academy of Sciences and Indian National of Science Academy under the bilateral exchange program of scientists awarded to N. Jha (No. Intl/PAS/2014/2608).
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Jha, N., Bieniasz, L.K. A Fifth (Six) Order Accurate, Three-Point Compact Finite Difference Scheme for the Numerical Solution of Sixth Order Boundary Value Problems on Geometric Meshes. J Sci Comput 64, 898–913 (2015). https://doi.org/10.1007/s10915-014-9947-5
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DOI: https://doi.org/10.1007/s10915-014-9947-5
Keywords
- Taylor series
- Finite difference approximations
- Compact scheme
- Generalized Numerov scheme
- Geometric grids
- Singularity