Second law analysis for variable viscosity hydromagnetic boundary layer flow with thermal radiation and Newtonian heating
type: Item
instance of: scholarly article
title: Second law analysis for variable viscosity hydromagnetic boundary layer flow with thermal radiation and Newtonian heating
zbMATH Open document ID: 1446.76181
published in: Entropy
publication date: 2014-08-26T00:00:00Z
review text: Summary: The present paper is concerned with the analysis of inherent irreversibility in hydromagnetic boundary layer flow of variable viscosity fluid over a semi-infinite flat plate under the influence of thermal radiation and Newtonian heating. Using local similarity solution technique and shooting quadrature, the velocity and temperature profiles are obtained numerically and utilized to compute the entropy generation number. The effects of magnetic field parameter, Brinkmann number, the Prandtl number, variable viscosity parameter, radiation parameter and local Biot number on the fluid velocity profiles, temperature profiles, local skin friction and local Nusselt number are presented. The influences of the same parameters and the dimensionless group parameter on the entropy generation rate in the flow regime and Bejan number are calculated, depicted graphically and discussed quantitatively. It is observed that the peak of entropy generation rate is attained within the boundary layer region and plate surface act as a strong source of entropy generation and heat transfer irreversibility.
Mathematics Subject Classification ID: 76W05
Mathematics Subject Classification ID: 80A21
Mathematics Subject Classification ID: 76D10
zbMATH DE Number: 6334256
zbMATH Keywords: flat plate
zbMATH Keywords: variable viscosity
zbMATH Keywords: Newtonian heating
zbMATH Keywords: thermal radiation
zbMATH Keywords: magnetic field
zbMATH Keywords: entropy generation rate
author: O. D. Makinde
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.3390/e13081446
OpenAlex ID: W2028544721
cites work: Effect of thermal radiation on MHD flow
cites work: Unsteady MHD free convective flow of a compressible fluid past a moving vertical plate in the presence of radiative heat transfer
cites work: Radiation effects for the Blasius and Sakiadis flows with a convective surface boundary condition
cites work: Second law analysis for a variable viscosity reactive Couette flow under Arrhenius kinetics
cites work: Second law analysis for a variable viscosity plane Poiseuille flow with asymmetric convective cooling
DOI: 10.3390/E13081446
description: scientific article; zbMATH DE number 6334256