Optimizing \(\mathcal{A}\)-stable hyperbolic fitting for time efficiency: exploring constant and variable stepsize approaches

Volume 35, Issue 4, pp 411--430 https://dx.doi.org/10.22436/jmcs.035.04.03
Publication Date: May 31, 2024 Submission Date: February 18, 2024 Revision Date: March 15, 2024 Accteptance Date: March 30, 2024

Authors

D. Baleanu - Department of Computer Science and Mathematics, Lebanese American University, P.O. Box 13-5053, Beirut, Lebanon. S. Qureshi - Department of Computer Science and Mathematics, Lebanese American University, P.O. Box 13-5053, Beirut, Lebanon. - Department of Basic Sciences and Related Studies, Mehran University of Engineering \(\&\) Technology, Jamshoro-76062, Pakistan. A. Soomro - Department of Basic Sciences and Related Studies, Mehran University of Engineering \(\&\) Technology, Jamshoro-76062, Pakistan. M. A. Rufai - Dipartimento di Matematica, Università degli Studi di Bari Aldo Moro, 70125 Bari, Italy.


Abstract

This paper proposes an optimal time-efficient numerical method for solving the initial value problems (IVPs) of ordinary differential equations (ODEs) that is both \(\mathcal{A}\)-stable and hyperbolically fitted. The method is designed to handle both constant and variable step sizes, making it highly adaptable to different types of ODEs. {The methodology proposed herein leverages the optimization of an off-grid point, derived from the predominant term of the local truncation error, to enhance both accuracy and stability in the solution of stiff ODEs. This approach incorporates a variable step size control, predicated upon the error estimation furnished by the embedded pair, and aims to minimize computational expenses while concurrently safeguarding both precision and stability.} Furthermore, the stability domain of the proposed method is demonstrated to be optimal, signifying it encompasses the maximal conceivable set of step sizes wherein the method retains its stability. Other important measures including zero-stability, consistency, and convergence are also discussed {theoretically and confirmed experimentally}. Numerical experiments consisting of the Duffing system, sinusoidal stiff system, periodic orbit system, two-body system, Lorenz system, and the system for catenary equation demonstrate that the proposed method is highly competitive in terms of accuracy and efficiency, and outperforms several existing methods for solving stiff ODEs with both constant and variable step sizes.


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ISRP Style

D. Baleanu, S. Qureshi, A. Soomro, M. A. Rufai, Optimizing \(\mathcal{A}\)-stable hyperbolic fitting for time efficiency: exploring constant and variable stepsize approaches, Journal of Mathematics and Computer Science, 35 (2024), no. 4, 411--430

AMA Style

Baleanu D., Qureshi S., Soomro A., Rufai M. A., Optimizing \(\mathcal{A}\)-stable hyperbolic fitting for time efficiency: exploring constant and variable stepsize approaches. J Math Comput SCI-JM. (2024); 35(4):411--430

Chicago/Turabian Style

Baleanu, D., Qureshi, S., Soomro, A., Rufai, M. A.. "Optimizing \(\mathcal{A}\)-stable hyperbolic fitting for time efficiency: exploring constant and variable stepsize approaches." Journal of Mathematics and Computer Science, 35, no. 4 (2024): 411--430


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