Numerical Investigation of Fractional-Order Kawahara and Modified Kawahara Equations by a Semianalytical Method
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Date
2022-02
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Hindawi
Abstract
In this work, the optimal homotopy asymptotic method (OHAM) has been used to find approximate solutions to the nonlinear fractional-order Kawahara and modified Kawahara equations. The method convergence is controlled by a flexible function known as the auxiliary function. The values of the unknown arbitrary constants in the auxiliary function are computed using the Caputo derivative fractional-order and the well-known approach of least squares. Fractional-order derivatives are taken in the Caputo sense with numerical values in the closed interval ½0, 1 . The suggested method is directly applied to fractional-order Kawahara and modified Kawahara equations, with no need for small or large parameter assumptions. The numerical results obtained by the proposed method are compared to the new iterative method (NIM). Results reveal that the proposed method converges faster to the exact solution than other methods in the literature.
Description
This article is published by Hindawi 2022 and is also available at https://doi.org/10.1155/2022/1985572
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Citation
Hindawi Journal of Nanomaterials Volume 2022, Article ID 1985572, 9 pages