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Approximate analytical solution of two‐dimensional space‐time fractional diffusion equation
Author(s) -
Pandey Prashant,
Kumar Sachin,
Gómez Francisco
Publication year - 2020
Publication title -
mathematical methods in the applied sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.719
H-Index - 65
eISSN - 1099-1476
pISSN - 0170-4214
DOI - 10.1002/mma.6456
Subject(s) - mathematics , laplace transform , fractional calculus , nonlinear system , mathematical analysis , anomalous diffusion , perturbation (astronomy) , advection , physics , knowledge management , innovation diffusion , quantum mechanics , computer science , thermodynamics
This work presents an iterative scheme for the numerical solution of the space‐time fractional two‐dimensional advection–reaction–diffusion equation applying homotopy perturbation with Laplace transform using Caputo fractional‐order derivatives. The solution obtained is beneficial and significant to analyze the modeling of superdiffusive systems and subdiffusive system, anomalous diffusion, transport process in porous media. This iterative technique presents the combination of homotopy perturbation technique, and Laplace transforms with He's polynomials, which can further be applied to numerous linear/nonlinear two‐dimensional fractional models to computes the approximate analytical solution. In the present method, the nonlinearity can be tackle by He's polynomials. The salient features of the present scientific work are the pictorial presentations of the approximate numerical solution of the two‐dimensional fractional advection–reaction–diffusion equation for different particular cases of fractional order and showcasing of the damping effect of reaction terms on the nature of probability density function of the considered two‐dimensional nonlinear mathematical models for various situations.