Mixed convection flows of tangent hyperbolic fluid past an isothermal wedge with entropy : a mathematical study

Reddy, PR, Gaffar, SA, Khan, MH, Venkatadri, K and Beg, OA ORCID: https://orcid.org/0000-0001-5925-6711 2020, 'Mixed convection flows of tangent hyperbolic fluid past an isothermal wedge with entropy : a mathematical study' , Heat Transfer . (In Press)

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Abstract

The non-linear, steady, mixed convective boundary layer flow and heat transfer of an incompressible tangent hyperbolic non-Newtonian fluid from an isothermal wedge in the presence of magnetic field is analyzed numerically using the Keller Box implicit finite difference technique. The entropy analysis due to MHD flow of tangent hyperbolic fluid past an isothermal wedge and viscous dissipation is also included. The numerical code is validated with previous Newtonian studies available in the literature. Graphical and tabulated results are analyzed to study the behavior of fluid velocity, temperature, concentration, shear stress, heat transfer rate, entropy generation number and Bejan number for various emerging thermo physical parameters, namely, Weissenberg number ( We), power Jaw index ( n), mixed convection parameter (,l), pressure gradient parameter ( m), Prandtl number (Pr), Biot number (y), Hartmann number (Ha ), Brinkmann number (Br), Reynolds number (Re ) and temperature gradient ( lI). It is observed that velocity, entropy, Bejan number and surface heat transfer rate are reduced with increasing Weissenberg number, but temperature and local skin friction are increased. Increasing pressure gradient enhances velocity, entropy, local skin friction and surface heat transfer rate but reduces temperature and Bejan number. An increase in an isothermal power law index (n) is observed to increase velocity, Bejan number and surface heat transfer rate but decreases temperature, entropy and local skin friction. Increasing magnetic parameter (Ha) is found to decrease temperature, entropy, surface heat transfer rate and local skin friction and increases velocity and Bejan number. The research is applicable for coating materials in chemical engineering for instance, robust paints, production of aerosol deposition and water soluble solution thermal treatment.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Heat Transfer
Publisher: Wiley
ISSN: 2688-4534
Depositing User: USIR Admin
Date Deposited: 16 Nov 2020 09:04
Last Modified: 23 Nov 2020 09:28
URI: http://usir.salford.ac.uk/id/eprint/58834

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