Investigation of variable viscosity and thermal conductivity on MHD mass transfer flow problem over a moving non-isothermal vertical plate

In this paper we investigate numerically the influence of variable viscosity and thermal conductivity on MHD convective flow of heat and mass transfer problem over a moving non-isothermal vertical plate. The viscosity of the fluid and thermal conductivity are presumed to be the inverse linear functions of temperature. With the help of similarity substitution, the flow governing equations and boundary conditions are transformed into non-dimensional ordinary differential equations. The boundary value problem so obtained is then solved using MATLAB bvp4c solver. The effects of various parameters viz. magnetic parameter, viscosity parameter, thermal conductivity parameter, stratification parameter and Schmidt number on velocity, temperature and concentration are obtained numerically and presented trough graphs. Also the coefficient of skin-friction, Nusselt number and Sherwood number are computed and displayed in tabular form. The effects of the viscosity parameter and thermal conductivity parameter in particular are prominent. This study has applications in a number of technological processes such as metal and polymer extrusion.

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Effect of Thermal Conductivity on Magnetohydrodynamic Heat and Mass Transfer in Porous Medium Saturated with Kuvshinshiki Fluid

FUOYE Journal of Engineering and Technology ◽

10.46792/fuoyejet.v2i2.125 ◽

2017 ◽

Vol 2 (2) ◽

Author(s):

Amos S Idowu ◽

Abdulwaheed Jimoh

Keyword(s):

Thermal Conductivity ◽

Mass Transfer ◽

Heat And Mass Transfer ◽

Sherwood Number ◽

Porous Plate ◽

Elastic Parameter ◽

Thermal Conductivity Parameter ◽

Conductivity Parameter ◽

The Impact ◽

Transfer Flow

The effects of Kuvshinshiki fluid on Magnetohydrodynamic (MHD) heat and mass transfer flow over a vertical porous plate with chemical reaction of nth order and thermal conductivity was carried out. The governing partial differential equations were solved numerically using implicit Crank-Nicolson method. A parametric study was performed to illustrate the impact of visco-elastic parameter, radiation parameter, thermal conductivity parameter, magnetic parameter, Prandtl number on the velocity,temperature and concentration profiles.The results were presented graphically with tabular presentations of the skin-friction,rate of heat and mass transfer which were all computed and discussed for different values of parameters of the problem. The numerical results revealed that the visco- elastic of Kuvshinshiki fluid type is growing as concentration profile increases, while the velocity and temperature profile falls ,then the radiation and thermal conductivity were growing as velocity and temperature increases. Also Sherwood number decreases as radiation increases but Sherwood number remains unchanged as thermal conductivity growing.

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Entropy analysis of EMHD non-Newtonian fluid flow induced by Riga plate with slip and convective boundary phenomena

International Journal of Modern Physics C ◽

10.1142/s0129183120500667 ◽

2020 ◽

Vol 31 (05) ◽

pp. 2050066 ◽

Cited By ~ 1

Author(s):

Mohamed Abd El-Aziz ◽

Ahmed A. Afify

Keyword(s):

Thermal Conductivity ◽

Entropy Rate ◽

Nonlinear Pdes ◽

Bejan Number ◽

Entropy Analysis ◽

Minimum Entropy ◽

Viscosity Parameter ◽

Riga Plate ◽

Thermal Conductivity Parameter ◽

Conductivity Parameter

Our paper is consecrated to show the influence of variable fluid properties in EMHD non-Newtonian power-law fluid along a moving Riga plate. Slip velocity phenomenon is considered at the surface which is convectively heated. Entropy analysis is elaborated employing thermodynamic second relation. The governing nonlinear PDEs are altered into ODEs through adequate propinquity transformations which have been solved numerically via the shooting method with the fourth-order Runge–Kutta algorithm through Mathematica software (bvp4c). Characteristics of different basic parameters on velocity, temperature, entropy generation and Bejan number are highlighted through graphs. The outcomes exhibit that the minimum entropy rate in the flow system can be obtained either with rising viscosity parameter and slip parameter or declining dimensionless parameter and thermal conductivity parameter. The entropy rate is minimal for dilatant fluid when compared to pseudo plastic fluid with the most governing parameters. Contrast behavior on the thermal field is noticed for larger values of viscosity parameter and thermal conductivity parameter.

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Generalized Transient Leveque Problem

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19961267 ◽

1996 ◽

Vol 61 (9) ◽

pp. 1267-1284

Author(s):

Ondřej Wein

Keyword(s):

Mass Transfer ◽

Exact Solution ◽

Shear Rate ◽

Transfer Problem ◽

Numerical Data ◽

Wall Shear Rate ◽

Response Operator ◽

Mass Transfer Problem ◽

Finite Step ◽

General Response

Response of an electrodiffusion friction sensor to a finite step of the wall shear rate is studied by numerically solving the relevant mass-transfer problem. The resulting numerical data on transient currents are treated further to provide reasonably accurate analytical representations. Existing approximations to the general response operator are checked by using the obtained exact solution.

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