Abstract
In this article, we proposed a new two-level implicit method of accuracy two in time and four in space based on spline in compression approximations using two half-step points and a central point on a uniform mesh for the numerical solution of the system of 1D quasi-linear parabolic partial differential equations subject to appropriate initial and natural boundary conditions prescribed. The proposed method is derived directly from the continuity condition of the first order derivative of the non-polynomial compression spline function. The stability analysis for a model problem is discussed. The method is directly applicable to problems in polar systems. To demonstrate the strength and utility of the proposed method, we have solved generalized Burgers–Huxley equation, generalized Burgers–Fisher equation, coupled Burgers-equations and parabolic equations with singular coefficients. We show that the proposed method enables us to obtain high accurate solution for high Reynolds number.
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Acknowledgements
The authors thank the reviewers for their valuable suggestions, which substantially improved the standard of the paper. This research work is partly supported by CSIR-SRF, Grant no: 09/045(1161)/2012-EMR-I and partly supported by ‘The Department of Science and Technology, Government of India’ under the ‘Mathematical Research Impact Centric Support (MATRICS) Scheme—Grant no: MTR/2017/000163’.
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This work is partially supported by CSIR-SRF, Grant no.: 09/045(1161)/2012-EMR-I, and partially supported by DST-MATRICS, Grant no.: MTR/2017/000163’.
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Mohanty, R.K., Sharma, S. & Singh, S. A New Two-Level Implicit Scheme for the System of 1D Quasi-Linear Parabolic Partial Differential Equations Using Spline in Compression Approximations. Differ Equ Dyn Syst 27, 327–356 (2019). https://doi.org/10.1007/s12591-018-0427-5
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DOI: https://doi.org/10.1007/s12591-018-0427-5
Keywords
- Quasi-linear parabolic equations
- Spline in compression
- Generalized Burgers–Huxley equations
- Coupled Burgers’ equation
- Newton’s iterative method