Journal
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
Volume 81, Issue -, Pages 118-124Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ijthermalsci.2014.03.009
Keywords
MHD; Nanofluid; Stretching sheet; Gyrotactic microorganisms; Bioconvection; Convective heating
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MHD laminar boundary layer flow with heat and mass transfer of an electrically conducting water-based nanofluid containing gyrotactic microorganisms along a convectively heated stretching sheet is investigated numerically. The governing equations are reduced to non-linear ordinary differential equations using Oberbeck-Boussinesq approximation and similarity transformations. The effects of the governing parameters on the dimensionless quantities like velocity, temperature, nanoparticle concentration, density of motile microorganisms, local Nusselt, and local Sherwood numbers for both nanoparticles and motile microorganism density are explored. It is found that the dimensionless velocity decreases with increasing buoyancy ratio and bioconvection Rayleigh number and the dimensionless temperature at the surface increases with an increase in the convective parameter, whereas it decreases with increasing buoyancy ratios. (C) 2014 Elsevier Masson SAS. All rights reserved.
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