Preprint Article Version 1 This version not peer reviewed

On Unsteady Three-Dimensional Axisymmetric MHD Nanofluid Flow with Entropy Generation and Thermo-Diffusion Effects

Version 1 : Received: 17 March 2017 / Approved: 17 March 2017 / Online: 17 March 2017 (15:10:32 CET)

A peer-reviewed article of this Preprint also exists.

Almakki, M.; Dey, S.; Mondal, S.; Sibanda, P. On Unsteady Three-Dimensional Axisymmetric MHD Nanofluid Flow with Entropy Generation and Thermo-Diffusion Effects on a Non-Linear Stretching Sheet. Entropy 2017, 19, 168. Almakki, M.; Dey, S.; Mondal, S.; Sibanda, P. On Unsteady Three-Dimensional Axisymmetric MHD Nanofluid Flow with Entropy Generation and Thermo-Diffusion Effects on a Non-Linear Stretching Sheet. Entropy 2017, 19, 168.

Journal reference: Entropy 2017, 19, 168
DOI: 10.3390/e19070168

Abstract

We investigate entropy generation in unsteady three-dimensional axisymmetric MHD nanofluid flow over a non-linearly stretching sheet. The flow is subject to thermal radiation and a chemical reaction. The conservation equations were solved using the spectral quasi-linearization method. The novelty of the work is in the study of entropy generation in three-dimensional axisymmetric MHD nanofluid and the choice of the spectral quasilinearization method as the solution method. The effects of Brownian motion and thermophoresis are also taken into account when the nanofluid particle volume fraction on the boundary in passively controlled. The results show that as the Hartman number increases, both the Nusselt number and the Sherwood number decrease whereas the skin friction increases. It is further shown that an increase in the thermal radiation parameter corresponds to a decrease in the Nusselt number. Moreover, entropy generation increases with the physical parameters.

Subject Areas

Unsteady 3-D axisymmetric nanofluid; Entropy generation; Spectral quasi-linearization method.

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