scholarly journals Natural convection heat and mass transfer in MHD fluid flow past a moving vertical plate with variable surface temperature and concentration in a porous medium

2015 ◽  
Vol 18 (3) ◽  
pp. 423-431 ◽  
Author(s):  
K. Javaherdeh ◽  
Mehrzad Mirzaei Nejad ◽  
M. Moslemi
Keyword(s):  
Mass Transfer ◽  
Porous Medium ◽  
Fluid Flow ◽  
Natural Convection ◽  
Surface Temperature ◽  
Heat And Mass Transfer ◽  
Vertical Plate ◽  
Convection Heat ◽  
Variable Surface ◽  
Variable Surface Temperature

MHD Natural Convection Heat and Mass Transfer Flow Past a Time Dependent Moving Vertical Plate with Ramped Temperature in a Rotating Medium with Hall Effects, Radiation and Chemical Reaction

2014 ◽  
Vol 31 (1) ◽  
pp. 91-104 ◽  
Author(s):  
G. S. Seth ◽  
S. Sarkar
Keyword(s):  
Mass Transfer ◽  
Natural Convection ◽  
Skin Friction ◽  
Heat And Mass Transfer ◽  
Chemical Reaction ◽  
Vertical Plate ◽  
Convection Heat ◽  
Flow Past ◽  
Hall Effects ◽  
Transfer Flow

AbstractAn investigation of unsteady hydromagnetic natural convection heat and mass transfer flow of an electrically conducting, viscous, incompressible and optically thick radiating fluid past an impulsively moving infinite vertical plate embedded in a uniform porous medium in a rotating system with Hall effects in the presence of homogeneous first order chemical reaction is carried out when temperature of the plate has a temporarily ramped profile. Exact solution of the governing equations is obtained in closed form by Laplace transform technique. Expressions for skin friction due to primary and secondary flows and Nusselt number are derived for both ramped temperature and isothermal plates. Expression for Sherwood number is also derived. The numerical values of primary and secondary fluid velocities, fluid temperature and species concentration are displayed graphically whereas those of skin friction are presented in tabular form for various values of pertinent flow parameters. In order to highlight the influence of ramped temperature distribution within the plate on the flow-field, the fluid flow past a ramped temperature plate is compared with the one past an isothermal plate.

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