Journal
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
Volume 58, Issue -, Pages 155-164Publisher
ELSEVIER
DOI: 10.1016/j.jtice.2015.06.026
Keywords
MHD; Non-Newtonian nanofluid; Shrinking sheet; Dual solution; Heat source/sink; Viscous dissipation
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Motivated by the various application of nanofluids, the present study deals with the numerical investigation of multiple solutions in MHD boundary layer flow and heat transfer of power-law nanofluid past a permeable nonlinear shrinking sheet with heat source/sink. The effect of Brownian motion, thermophoresis, viscous dissipation, suction/injection and surface slip are also considered with no nanoparticle flux at the sheet. The resulting conservation equations are transformed into dimensionless ordinary differential equations using suitable transformation and solved numerically by RKF45 method with shooting technique. The dual solutions are obtained in certain range of power-law index (n(c), infinity), mass transfer parameter (s(c), infinity)and shrinking parameter (chi(c), 0). The critical value tic lies in the domain of shear thinning nanofluid (0 < n < 1) for fixed values of other parameters. The rate of heat transfer improves due to heat sink, higher prandtl number and adequate suction for the both first and second solutions. (C) 2015 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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