Dufour and Soret Effects on Convection Heat and Mass Transfer in an Electrical Conducting Power Law Flow over a Heated Porous Plate

2013 ◽  
Vol 14 (1) ◽  
pp. 32-39 ◽  
Author(s):  
P. O. Olanrewaju ◽  
O. J. Fenuga ◽  
J. A. Gbadeyan ◽  
T. G. Okedayo
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Power Law ◽  
Porous Plate ◽  
Convection Heat ◽  
Electrical Conducting

Convection Heat and Mass Transfer in a Power Law Fluid with Non Constant Relaxation Time Past a Vertical Porous Plate in the Presence of Thermo and Thermal Diffusion

2012 ◽  
Vol 42 (4) ◽  
pp. 53-74 ◽  
Author(s):  
B. I. Olajuwon ◽  
I. S. Oyelakin
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Relaxation Time ◽  
Differential Equations ◽  
Heat And Mass Transfer ◽  
Power Law ◽  
Porous Plate ◽  
Convection Heat ◽  
Power Law Fluid ◽  
Vertical Porous Plate

Abstract The paper investigates convection heat and mass transfer in power law fluid flow with non relaxation time past a vertical porous plate in presence of a chemical reaction, heat generation, thermo diffu- sion and thermal diffusion. The non - linear partial differential equations governing the flow are transformed into ordinary differential equations using the usual similarity method. The resulting similarity equations are solved numerically using Runge-Kutta shooting method. The results are presented as velocity, temperature and concentration profiles for pseudo plastic fluids and for different values of parameters governing the prob- lem. The skin friction, heat transfer and mass transfer rates are presented numerically in tabular form. The results show that these parameters have significant effects on the flow, heat transfer and mass transfer.

Effect of Melting on Mixed Convection Heat and Mass Transfer in a Non-Newtonian Fluid Saturated Non-Darcy Porous Medium

2012 ◽  
Vol 134 (4) ◽  
Author(s):  
R. R. Kairi ◽  
P. V. S. N. Murthy
Keyword(s):  
Mass Transfer ◽  
Porous Medium ◽  
Mixed Convection ◽  
Heat And Mass Transfer ◽  
Newtonian Fluid ◽  
Power Law ◽  
Soret Effect ◽  
Physical Parameters ◽  
Convection Heat ◽  
Wide Range

In this paper, we investigate the influence of melting on mixed convection heat and mass transfer from vertical flat plate in a non-Newtonian fluid-saturated non-Darcy porous medium including the prominent Soret effect. The wall and the ambient medium are maintained at constant but different levels of temperature and concentration such that the heat and mass transfer occurs from the wall to the medium. The Ostwald–de Waele power law model is used to characterize the non-Newtonian fluid behavior. A similarity solution for the transformed governing equations is obtained. The numerical computation is carried out for various values of the nondimensional physical parameters. The variation of temperature, concentration, and heat and mass transfer coefficients with the power law index, mixed convection parameter, inertia parameter, melting parameter, Soret number, buoyancy ratio, and Lewis number is discussed for a wide range of values of these parameters.

scholarly journals Convection heat and mass transfer in a hydromagnetic Carreau fluid past a vertical porous plate in presence of thermal radiation and thermal diffusion

2011 ◽  
Vol 15 (suppl. 2) ◽  
pp. 241-252 ◽  
Author(s):  
Ishola Olajuwon
Keyword(s):  
Mass Transfer ◽  
Differential Equations ◽  
Thermal Radiation ◽  
Heat And Mass Transfer ◽  
Thermal Diffusion ◽  
Porous Plate ◽  
Convection Heat ◽  
Carreau Fluid ◽  
Vertical Porous Plate ◽  
Linear Partial Differential Equations

The paper presents the numerical investigation of the convection heat and mass transfer in a hydromagnetic Carreau fluid past a vertical porous plate in presence of thermal radiation and thermal diffusion. The non-linear partial differential equations governing the flow are transformed into ordinary differential equations using the usual similarity method and the resulting similarity equations are solved numerically using Runge-Kutta shooting method. The results are presented as velocity, temperature and concentration profiles for different values of parameters entering into the problem. The effects of suction, magnetic field, thermal radiation and thermal diffusion on the skin friction, rate of heat transfer and mass transfer are presented numerically in tabular form.

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