scholarly journals Effect of Mass Transfer and Mixed Convection on A Steady MHD Flow over A Porous Flat Plate

2015 ◽  
Vol V4 (10) ◽  
Author(s):  
Dr. Vibhor Tomer ◽  
Dr. Manoj Kumar ◽  
Keyword(s):  
Mass Transfer ◽  
Mixed Convection ◽  
Flat Plate ◽  
Mhd Flow ◽  
Porous Flat Plate

Dufour and Soret Effects on Mixed Convection Flow Past a Vertical Porous Flat Plate with Variable Suction

2006 ◽  
Vol 11 (1) ◽  
pp. 3-12 ◽  
Author(s):  
M. S. Alam ◽  
M. M. Rahman
Keyword(s):  
Differential Equations ◽  
Mixed Convection ◽  
Flat Plate ◽  
Integration Scheme ◽  
Convection Flow ◽  
Mixed Convection Flow ◽  
Local Skin ◽  
Suction Parameter ◽  
Flow Past ◽  
Porous Flat Plate

In this paper the Dufour and Soret effects on mixed convection flow past a vertical porous flat plate embedded in a porous medium have been studied numerically. The governing non-linear partial differential equations have been transformed by a similarity transformation into a system of ordinary differential equations, which are solved numerically by applying NachtsheimSwigert shooting iteration technique together with sixth order Runge-Kutta integration scheme. For fluids of medium molecular weight (H2, air), profiles of the dimensionless velocity, temperature and concentration distributions are shown graphically for various values of suction parameter fw, Dufour number Du and Soret number Sr. Finally, numerical values of physical quantities, such as the local skin-friction coefficient, the local Nusselt number and the local Sherwood number are presented in tabular form.

Impairment of Local Heat Transfer of the Turbulent Mixed Convection in a Vertical Flat Plate

2018 ◽  
Author(s):  
Myeong-Seon Chae ◽  
Bum-Jin Chung
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Mixed Convection ◽  
Flat Plate ◽  
Forced Convection ◽  
Convection Heat Transfer ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Convection Heat ◽  
Vertical Flat Plate

The heat transfer of the buoyancy-aided turbulent mixed convective flow in a vertical flat plate was investigated experimentally. Mass transfer experiments were carried out based on the heat and mass transfer analogy. The Rayleigh numbers ranged from 1.69 × 108 to 2.11 × 1013, depending on the height of the vertical flat plate. The Reynolds numbers varied from 4,585 to 17,320 for turbulent regimes. The test results for turbulent forced convections agreed well with the forced convection correlations established by Petukhov et al. The local heat transfer rates of the turbulent mixed flow exhibited the impairment of heat transfer compared to the forced convection and non-monotonous behavior along the axial position due to buoyancy effect. The local minimum heat transfer was 38.6% lower than the forced convection heat transfer. The turbulent mixed convection heat transfer is affected by the height of vertical plate.

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