Approximate solution of space and time fractional higher order phase field equation

S. Shamseldeen

Physica A: Statistical Mechanics and its Applications, 2018, vol. 494, issue C, 308-316

Abstract: This paper is concerned with a class of space and time fractional partial differential equation (STFDE) with Riesz derivative in space and Caputo in time. The proposed STFDE is considered as a generalization of a sixth-order partial phase field equation. We describe the application of the optimal homotopy analysis method (OHAM) to obtain an approximate solution for the suggested fractional initial value problem. An averaged-squared residual error function is defined and used to determine the optimal convergence control parameter. Two numerical examples are studied, considering periodic and non-periodic initial conditions, to justify the efficiency and the accuracy of the adopted iterative approach. The dependence of the solution on the order of the fractional derivative in space and time and model parameters is investigated.

Keywords: Phase field equation; Anomalous diffusion; Riesz; Caputo; Optimal homotopy analysis method (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:494:y:2018:i:c:p:308-316

DOI: 10.1016/j.physa.2017.12.056

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