scholarly journals Influence of Thermal Radiation on a Transient MHD Couette Flow through a Porous Medium

2012 ◽  
Vol 5 (01) ◽  
Keyword(s):  
Porous Medium ◽  
Thermal Radiation ◽  
Couette Flow ◽  
Flow Through ◽  
Mhd Couette Flow

scholarly journals Variable Fluid Properties and Thermal Radiation Effects on Natural Convection Couette Flow through a Vertical Porous Channel

2019 ◽  
pp. 1-17
Author(s):  
Abiodun O. Ajibade ◽  
Yusuf A. Bichi
Keyword(s):  
Natural Convection ◽  
Thermal Radiation ◽  
Couette Flow ◽  
Fluid Velocity ◽  
Heat Diffusion ◽  
Porous Channel ◽  
Flow Equations ◽  
Variable Fluid Properties ◽  
Fluid Properties ◽  
Flow Through

The present article investigates natural convection Couette flow through a vertical porous channel due to combined effects of thermal radiation and variable fluid properties. The fluid considered in the model is of an optically dense with all its physical properties assumed constant except for its viscosity and thermal conductivity which are temperature dependent. The flow equations are simplified using non-linear Rosseland heat diffusion and as a consequence it resulted to high non-linearity of the flow equations. Adomian decomposition method (ADM) is used to solve the emanating equations and the influences of the essential controlling physical parameters involved are presented on graphs, tables and were discussed. In the course of investigation; it was found that both the fluid velocity and its temperature within the channel were seen to increase with growing thermal radiation parameter while the fluid’s velocity and temperature were observed to descend with increase in thermal conduction of the fluid. Similarly; the fluid velocity was found to increase with decrease in the fluid viscosity.  To validate the accuracy of the present investigation; the results obtained here in have been compared with a published work where good agreement was found.

scholarly journals Radiative Effects on Unsteady MHD Couette Flow through a Parallel Plate with Constant Pressure Gradient

2020 ◽  
pp. 1-19
Author(s):  
E. O. Anyanwu ◽  
R. O. Olayiwola ◽  
M. D. Shehu ◽  
A. Lawal
Keyword(s):  
Pressure Gradient ◽  
Couette Flow ◽  
Constant Pressure ◽  
Fluid Motion ◽  
Radiation Parameter ◽  
Suction Parameter ◽  
Expansion Technique ◽  
Flow Through ◽  
Mhd Couette Flow ◽  
Primary Velocity

In this paper, the unsteady MHD Couette flow through a porous medium of a viscous incompressible fluid bounded by two parallel porous plates under the influence of thermal radiation and chemical reaction is investigated. A uniform suction and injection are applied perpendicular to the plates while the fluid motion is subjected to the constant pressure gradient. The transformed conservation equations are solved analytically subject to physically appropriate boundary conditions by using the Eigenfunction expansion technique. The influence of some emerging non-dimensional parameters namely, pressure gradient, suction parameter, radiation parameter, and Hartman number are examined in detail. It is observed that the primary velocity is increased with increasing pressure gradient while the increase in radiation parameter leads to adecrease in the thermal profile of the flow.

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