Viscous Dissipation, Soret and Dufour Effects on MHD Free Convection Flow of Doubly Stratified Darcy Porous Medium with Internal Heat Generation

2017 ◽  
Vol 9 (4) ◽  
pp. 605
Author(s):  
K. Govardhan ◽  
K. Kaladhar ◽  
Balasiddulu Malga ◽  
G. Nagaraju ◽  
S. Renuka
Keyword(s):  
Porous Medium ◽  
Free Convection ◽  
Viscous Dissipation ◽  
Heat Generation ◽  
Internal Heat ◽  
Internal Heat Generation ◽  
Convection Flow ◽  
Free Convection Flow ◽  
Soret And Dufour Effects

Effects of Heat Generation or Absorption on Free Convection Flow of a Nanofluid Past an Isothermal Inclined Plate

2014 ◽  
Vol 970 ◽  
pp. 267-271 ◽  
Author(s):  
S. Akilu ◽  
M. Narahari
Keyword(s):  
Free Convection ◽  
Heat Generation ◽  
Internal Heat ◽  
Internal Heat Generation ◽  
Convection Flow ◽  
Inclined Plate ◽  
Free Convection Flow ◽  
Absorption Parameter ◽  
Keller Box Method ◽  
Heat Generation Or Absorption

In this paper, the effects of internal heat generation or absorption on free convection flow of a nanofluid past an isothermal inclined plate have been investigated numerically. The governing boundary-layer equations are first transformed into a system of coupled nonlinear ordinary differential equations using similarity variables. An efficient implicit finite-difference scheme known as the Keller-box method is employed to solve the resulting nonlinear equations. The effects of internal heat generation or absorption parameter on the flow fields have been presented graphically and discussed. It is found that the rate of heat transfer decreases with increasing heat generation, Brownian motion and thermophoresis parameters whereas it increases with increasing heat absorption parameter and Prandtl number.

scholarly journals Soret and Dufour effects on an unsteady MHD free convection flow past a semi-infinite permeable vertical moving plate in a porous medium with chemical reaction

2011 ◽  
Vol 8 (1) ◽  
pp. 37-48 ◽  
Author(s):  
Sheri Shivaiah ◽  
J. A. Rao
Keyword(s):  
Porous Medium ◽  
Free Convection ◽  
Chemical Reaction ◽  
Convection Flow ◽  
Free Convection Flow ◽  
Moving Plate ◽  
Soret And Dufour Effects ◽  
Grashof Number ◽  
Flow Parameters ◽  
Wide Range

In the present study, an unsteady two-dimensional MHD free convection flow chemical reacting fluid past a semi-infinite permeable vertical moving plate in a porous medium with Soret and Dufour effects is analyzed. The dimensionless governing equations are solved numerically by a finite element method. Computations are performed for a wide range of the governing flow parameters, viz., the thermal Grashof number, solutal Grashof number, Magnetic field parameter, Permeability parameter, Prandtl number, Heat absorption parameter, Dufour number, Schmidt number, Chemical reaction parameter and Soret number. The effects of these flow parameters on the velocity, temperature and concentration are shown graphically. Finally, the effects of various parameters on the skin-friction coefficient, Nusselt number and Sherwood number are shown in Tables. DOI: http://dx.doi.org/10.3329/jname.v8i1.6054

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