Homotopy perturbation method: a new nonlinear analytical technique
Applied Mathematics and Computation
Variational iteration method-Some recent results and new interpretations
Journal of Computational and Applied Mathematics
Computers & Mathematics with Applications
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This present work examines the effect of thermal radiation on inherent irreversibility in the flow of a variable viscosity optically thin fluid through a channel with isothermal walls. First and Second Laws of thermodynamics are employed in order to analyze the problem. The simplified governing non-linear equations are solved analytically using a perturbation method coupled with a special type of Hermite-Pade semi-analytical technique. Expressions for dimensionless velocity and temperature, thermal criticality conditions and entropy generation number are obtained. Both numerical and graphical results are presented and discussed quantitatively with respect to various parameters embedded in the problem.