scholarly journals SORET AND DUFOUR EFFECTS ON MHD RADIATIVE HEAT AND MASS TRANSFER FLOW OF A JEFFREY FLUID OVER A STRETCHING SHEET

2017 ◽  
Vol 8 (0) ◽  
Author(s):  
P.V. Satya Narayana ◽  
D. Harish Babu ◽  
B. Venkateswarlu
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Radiative Heat ◽  
Stretching Sheet ◽  
Jeffrey Fluid ◽  
Soret And Dufour Effects ◽  
Transfer Flow

scholarly journals Soret and Dufour effects on MHD heat and mass transfer flow of a micropolar fluid with thermophoresis particle deposition

2016 ◽  
Vol 13 (1) ◽  
pp. 39-50 ◽  
Author(s):  
Patakota Sudarsana Reddy ◽  
Ali J. Chamkha
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Micropolar Fluid ◽  
Particle Deposition ◽  
Porous Plate ◽  
Soret And Dufour Effects ◽  
Element Analysis ◽  
Dimensional Parameter ◽  
Suction Parameter ◽  
Transfer Flow

The effect of thermophoresis on  heat and mass transfer flow of a micropolar fluid in the presence of Soret and Dufour effects past a vertical porous plate have been investigated . The transformed conservation equations are solved numerically using an optimized, extensively validated, variational finite element analysis. The influence of important non-dimensional parameter, Suction parameter ( ), Soret parameter (Sr), Dufour parameter (Du) and thermophoretic parameter (?) on velocity, angular velocity (micro-rotation), temperature and concentration fields as well as shear stress, Nusselt number and Sherwood number are examined in detail and the results are shown in graphically and in tabular form to know the physical importance of the problem. It is found  that the imposition of wall fluid suction (V0>0) in this present problem of flow has the effect of depreciating the  velocity, micro-rotation, temperature and concentration boundary layer thicknesses at every finite value of ?. 

scholarly journals Thermal Radiation Effects on Heat and Mass Transfer of Magnetohydrodynamics Dusty Jeffrey Fluid past an Exponentially Stretching Sheet

MATEMATIKA ◽  
2019 ◽  
Vol 35 (2) ◽  
pp. 187-200
Author(s):  
Siti Nur Haseela Izani ◽  
Anati Ali
Keyword(s):  
Mass Transfer ◽  
Thermal Radiation ◽  
Heat And Mass Transfer ◽  
Radiation Effects ◽  
Stretching Sheet ◽  
Dust Particles ◽  
Jeffrey Fluid ◽  
Exponentially Stretching Sheet ◽  
Keller Box Method ◽  
Exponentially Stretching

The heat and mass transfer of steady magnetohydrodynamics of dusty Jeffrey fluid past an exponentially stretching sheet in the presence of thermal radiation have been investigated. The main purpose of this study is to conduct a detailed analysis of flow behaviour of suspended dust particles in non-Newtonian fluid. The governing equations hav been converted into dimensionless form, and then solved numerically via the Keller-box method. The expression of Sherwood number, Nusselt number and skin friction have been evaluated, and then displayed in tabular forms. Velocity, temperature and concentration profiles are presented graphically. It is observed that large value of dust particles mass concentration parameter has reduced the flow velocity significantly. Increase in radiation parameter enhances the temperature, whereas the increment in Schmidt number parameter reduces the concentration.

Transient natural convention heat and mass transfer flow in a vertical channel in the presence of Soret and Dufour effects: An analytical approach

2020 ◽  
Vol 31 (02) ◽  
pp. 2050032
Author(s):  
Basant K. Jha ◽  
Yusuf Y. Gambo
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Vertical Channel ◽  
Soret And Dufour Effects ◽  
Velocity Increase ◽  
Grashof Number ◽  
Increase With Increase ◽  
Soret Number ◽  
Dufour Number ◽  
Transfer Flow

This paper presents an analytical solution for transient natural convection heat and mass transfer flow in a vertical channel with Soret and Dufour effects. Due to the presence of these two effects, energy and concentration equations are coupled. The dimensionless governing equations for momentum, energy and concentration are first decoupled using perturbation method and then solved using Laplace Transform Technique (LTT) under relevant initial and boundary conditions. The expressions for temperature, concentration, velocity, rate of heat transfer, rate of mass transfer and skin-friction are obtained. Numerical solutions are also obtained using pdepe in MATLAB so as to validate the accuracy of the proposed analytical method. The effects of Soret parameter, Dufour parameter, Grashof number, modified Grashof number, Prandtl number, Schmidt number and dimensionless time are presented graphically and discussed. It is observed that the temperature and velocity increase with increase in Dufour number, while concentration decreases with increase of Dufour number. The Dufour effect is more significant on the temperature and velocity in comparison to concentration. Moreover, it is observed that the concentration and velocity increase with increase in Soret number while the impact of Soret number is just contrast on temperature variation.

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