Heat Transfer in Magnetohydrodynamic Flow of a Casson Fluid with Porous Medium and Newtonian Heating

The present study investigated the magnetohydrodynamic (MHD) flow and heat transfer on a stagnation point past a stretching sheet in a blood-based Casson ferrofluid with Newtonian heating boundary conditions. The ferrite Fe3O4 and cobalt ferrite CoFe2O4 ferroparticles suspended into Casson fluid represent by human blood to form blood-based Casson ferrofluid are numerically examined. The mathematical model for Casson ferrofluid which is in non-linear partial differential equations are first transformed to a more convenient form by similarity transformation approach then solved numerically by using the Runge-Kutta-Fehlberg (RKF45) method. The characteristics and effects of the stretching parameter, the magnetic parameter, the Casson parameter and the ferroparticle volume fraction for Fe3O4 and CoFe2O4 on the variation of surface temperature and the reduced skin friction coefficient are analyzed and discussed. It is found that the blood-based Casson ferrofluid provided up to 46% higher in temperature surface compared to blood-based fluid with the presence of magnetic effects.

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MHD PERISTALTIC SLIP FLOW OF CASSON FLUID AND HEAT TRANSFER IN CHANNEL FILLED WITH A POROUS MEDIUM

Scientia Iranica ◽

10.24200/sci.2018.20319 ◽

2018 ◽

Vol 0 (0) ◽

pp. 0-0

Author(s):

O. D. Makinde ◽

M. Gnaneswara Reddy

Keyword(s):

Heat Transfer ◽

Porous Medium ◽

Slip Flow ◽

Casson Fluid

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UNSTEADY HEAT TRANSFER FLOW OF A CASSON FLUID WITH NEWTONIAN HEATING AND THERMAL RADIATION

Jurnal Teknologi ◽

10.11113/jt.v78.8264 ◽

2016 ◽

Vol 78 (4-4) ◽

Cited By ~ 1

Author(s):

Abid Hussanan ◽

Mohd Zuki Salleh ◽

Ilyas Khan ◽

Razman Mat Tahar

Keyword(s):

Heat Transfer ◽

Thermal Radiation ◽

Vertical Plate ◽

Casson Fluid ◽

Newtonian Heating ◽

Governing Equations ◽

Unsteady Heat Transfer ◽

Laplace Transform Technique ◽

Limiting Case ◽

Transfer Flow

This study investigates the unsteady heat transfer flow of a non-Newtonian Casson fluid over an oscillating vertical plate with Newtonian heating on the wall under the effects of thermal radiation. With the help of non-dimensional variables, governing equations are written into dimensionless form and then solved analytically by Laplace transform technique to find the solutions of temperature and velocity. The corresponding solutions of Nusselt number and skin friction are also calculated. The solution in term of viscous fluid is recovered as a limiting case of this work. The effects of the pertinent parameters on temperature and velocity are presented graphically and discussed details in this paper.

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Unsteady Magnetohydrodynamic Mixed Convective Flow of a Reactive Casson Fluid in a Vertical Channel Filled with a Porous Medium

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.408.33 ◽

2021 ◽

Vol 408 ◽

pp. 33-49

Author(s):

Lazarus Rundora

Keyword(s):

Magnetic Field ◽

Heat Transfer ◽

Porous Medium ◽

Fluid Flow ◽

Vertical Channel ◽

Casson Fluid ◽

Convection Flow ◽

Temperature Dependent ◽

Temperature Dependent Viscosity ◽

Dependent Viscosity

This article analyses the thermal decomposition in an unsteady MHD mixed convection flow of a reactive, electrically conducting Casson fluid within a vertical channel filled with a saturated porous medium and the influence of the temperature dependent properties on the flow. The fluid is assumed to be incompressible with the viscosity coefficient varying exponentially with temperature. The flow is subjected to an externally applied uniform magnetic field. The exothermic chemical kinetics inherent in the flow system give rise to heat dissipation. A technique based on a semi-discretization finite difference scheme and the shooting method is applied to solve the dimensionless governing equations. The effects of the temperature dependent viscosity, the magnetic field and other important parameters on the velocity and temperature profiles, the wall shear stress and the wall heat transfer rate are presented graphically and discussed quantitatively and qualitatively. The fluid flow model revealed flow characteristics that have profound ramifications including the increased heat transfer enhancement attributes of the reactive temperature dependent viscosity Casson fluid flow.

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