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DOE OSTI · 22769210

Compact finite difference relaxation method for chaotic and hyperchaotic initial value systems

Mathale, D.·Khumalo, M.
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Abstract

In this paper, we present a new application of higher order compact finite differences to solve nonlinear initial value problems exhibiting chaotic behaviour. The method involves dividing the domain of the problem into multiple sub-domains, with each sub-domain integrated using higher order compact finite difference schemes. The nonlinearity is dealt using a Gauss–Seidel-like relaxation. The method is, therefore, referred to as the multi-domain compact finite difference relaxation method (MD-CFDRM). In this new application, the MD-CFDRM is used to solve famous chaotic systems and hyperchaotic systems. The main advantage of the new approach is that it offers better accuracy on coarser grids which significantly improves the computational speed of the method. The results are compared with spectral-based multi-domain method.

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97 MATHEMATICS AND COMPUTINGCHAOS THEORYNONLINEAR PROBLEMSRELAXATION

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Mathale, D., Khumalo, M.. 2018-09-15. Compact finite difference relaxation method for chaotic and hyperchaotic initial value systems. https://doi.org/10.1007/s40314-018-0624-4

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