scholarly journals Thermal diffusion and diffusion thermo effects on unsteady MHD fluid flow past a moving vertical plate embedded in porous medium in the presence of Hall current and rotating system

2016 ◽  
Vol 170 (2) ◽  
pp. 243-265 ◽  
Author(s):  
G. Jithender Reddy ◽  
R. Srinivasa Raju ◽  
P. Manideep ◽  
J. Anand Rao
Keyword(s):  
Porous Medium ◽  
Fluid Flow ◽  
Thermal Diffusion ◽  
Vertical Plate ◽  
Hall Current ◽  
Rotating System ◽  
Flow Past ◽  
And Diffusion

scholarly journals MHD free convective flow past an impulsively started vertical plate through a porous medium with radiative heat transfer and chemical reaction in a rotating system

2019 ◽  
Vol 15 (2) ◽  
pp. 237-242
Author(s):  
Uday Singh Rajput ◽  
Mohammad Shareef
Keyword(s):  
Porous Medium ◽  
Chemical Reaction ◽  
Convective Flow ◽  
Vertical Plate ◽  
Hall Current ◽  
Fluid Velocity ◽  
Rotating System ◽  
Free Convective Flow ◽  
Flow Past ◽  
Laplace Transform Technique

The effect of Hall current, radiation and chemical reaction on MHD free convective flow past an impulsively started vertical plate through a porous medium in a rotating system is considered. The analytical solutions of dimensionless governing equations are obtained by Laplace transform technique. The effects of various parameters on the fluid velocity, concentration and temperature distribution near the plate are analyzed and shown graphically. The numerical values of shear stress at the plate are shown in a table. It is observed that the fluid velocity near the plate is affected significantly by Hall current, radiation, chemical reaction and porous medium. The conclusion of study have applications in the field related to the solar physics dealing with the solar cycle, the sunspot development, the structure of rotating magnetic stars etc.

scholarly journals Effects of Some Flow Parameters on Unsteady MHD Fluid Flow Past a Moving Vertical Plate Embedded in Porous Medium in the Presence of Hall Current and Rotating System

2020 ◽  
pp. 15-29
Author(s):  
M. O. Durojaye ◽  
K. A. Jamiu ◽  
F. O. Ogunfiditimi
Keyword(s):  
Porous Medium ◽  
Fluid Flow ◽  
Vertical Plate ◽  
Hall Current ◽  
Numerical Study ◽  
Method Of Lines ◽  
Flow Parameters ◽  
Flow Past ◽  
Primary Velocity ◽  
Dufour Number

This paper is on the numerical study of the effects of some flow parameters like Hall current, rotation, thermal diffusion (Soret) and diffusion thermo (Dufour) on unsteady magnetohydrodynamic natural convective heat and mass transfer of a viscous, rotating, electrically conducting and incompressible fluid flow past an impulsively moving vertical plate embedded in porous medium. The fundamental governing dimensionless coupled boundary layer partial differential equations are solved by the method of lines (MOL). Computations are then performed to determine the effects of the governing flow parameters. The results show that an increase in Soret number, Dufour number and Hall current parameter, causes an increase in the primary and secondary velocities of the fluid flow. As rotating parameter increases, the primary velocity of the flow decreases. Similarly, as Dufour and Soret numbers increase, the temperature and concentration profiles of the fluid flow increase. The effects of the flow parameters on primary and secondary velocity, temperature and concentration fields for externally cooling of the plate are shown graphically.

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