Author : B. Prabhakar Reddy 1
Date of Publication :13th March 2018
Abstract: The effects of viscous dissipation on unsteady MHD free convection flow with a parabolic starting motion of an infinite isothermal vertical porous plate in the presence of radiation and chemical reaction has been presented. The fluid is considered a grey, absorbing emitting radiation but a non-scattering medium. The dimensionless governing equations for this investigation are solved numerically by applying finite element method. The numerical results for the velocity field, temperature fields and concentration field are presented through graphs for different values of the physical parameters involved. We found that there is a fall in the temperature and velocity in the boundary layer as the radiation parameter increased. The velocity field increases with increase in the thermal and mass Grashof numbers and decreases with increase in the magnetic parameter. Further, the concentration and velocity fields decrease with increasing Schmidt number and chemical reaction parameter
Reference :
-
- R. Muthucumaraswamy and b. Janakiraman B, “MHD and radiation effects on moving isothermal vertical plate with variable mass diffusion” Theoret. Appl. Mech, vol. 33, pp.17 – 29, (2006)
- R. t. Shanker and R. M. Gnaneshwar, “Radiation effects on MHD flow past an impulsively started infinite vertical plate through a porous medium with variable temperature and mass diffusion’ J. Pure and Appl. Phys, vol. 19, No. 3, pp.191 – 200, (2007).
- N. Ahmed and H. K. Sarmah, “Thermal radiation effects on a transient MHD flow with mass transfer past an impulsively fixed infinite vertical plate” Int. J. Appl. Math and Mech, vol. 5, No. 5, pp.87 – 98, (2009).
- M. A. A. Mahmoud, “Thermal radiation effects on unsteady MHD free convection flow past a vertical plate with temperature dependent viscosity” Canadian J. Chem. Engg, vol. 87, pp.47 – 52, (2009).
- S. Mukhopadhyay, “The effects of thermal radiation on unsteady mixed convection flow and heat transfer over a porous stretching surface in porous medium” Int. J. heat and Mass Transfer, 52, pp.3261 – 3265, (2009).