An optimal homotopy asymptotic method applied to the nonlinear thin film flow problems
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 8 October 2018
Issue publication date: 30 October 2018
Abstract
Purpose
This paper aims to discuss the approximate solution of the nonlinear thin film flow problems. A new analytic approximate technique for addressing nonlinear problems, namely, the optimal homotopy asymptotic method (OHAM), is proposed and used in an application to the nonlinear thin film flow problems.
Design/methodology/approach
This approach does not depend upon any small/large parameters. This method provides a convenient way to control the convergence of approximation series and to adjust convergence regions when necessary.
Findings
The obtained solutions show that the OHAM is more effective, simpler and easier than other methods. The results reveal that the method is explicit. By applying the method to nonlinear thin film flow problems, it was found to be simpler in applicability, and more convenient to control convergence. Therefore, the method shows its validity and great potential for the solution of nonlinear problems in science and engineering.
Originality/value
The proposed method is tested upon nonlinear thin film flow equation from the literature and the results are compared with the available approximate solutions including Adomian decomposition method (ADM), homotopy perturbation method, modified homotopy perturbation method and HAM. Moreover, the exact solution is compared with the available numerical solutions. The graphical representation of the solution is given by Maple and is physically interpreted.
Keywords
Acknowledgements
The authors would like to thank the referees for their valuable suggestions and comments.
Citation
Manafian, J. and Teymuri sindi, C. (2018), "An optimal homotopy asymptotic method applied to the nonlinear thin film flow problems", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 28 No. 12, pp. 2816-2841. https://doi.org/10.1108/HFF-08-2017-0300
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited