Numerical simulation of Bratu’s problem using a new form of the Adomian decomposition technique

Abstract

Purpose

This paper aims to discuss a new form of the Adomian decomposition technique for the numerical treatment of Bratu’s type one-dimensional boundary value problems (BVPs). Moreover, the author also addresses convergence and error analysis for the completeness of the proposed technique.

Design/methodology/approach

First, the author discusses the standard Adomian decomposition method and an algorithm based on Duan’s corollary and Rach’s rule for the fast calculation of the Adomian polynomials. Then, a new form of the Adomian decomposition technique is present for the numerical simulation of Bratu’s BVPs.

Findings

The reliability and validity of the proposed technique are examined by calculating the absolute errors of Bratu’s problem for some different values of Bratu parameter λ. Numerical simulation demonstrates that the proposed technique yields higher accuracy than the Bessel collocation and other known methods.

Originality/value

Unlike the other methods, the proposed technique does not need linearization, discretization or perturbation to handle the non-linear problems. So, the results obtained by the present technique are more physically realistic.

Citation

Umesh, U. (2023), "Numerical simulation of Bratu’s problem using a new form of the Adomian decomposition technique", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 33 No. 6, pp. 2295-2307. https://doi.org/10.1108/HFF-11-2022-0656