THERMAL RADIATION EFFECT ON UNSTEADY HYDROMAGNETIC CONVECTIVE FLOW PAST A HEATED STRETCHING SHEET WITH FREE STREAM PRESSURE GRADIENT

Thiagarajan Murugesan, Dhandapani Palaniappan, Periasamy C

Abstract


The numerical study of the effect of thermal radiation on nonlinear unsteady hydromagnetic flow and heat transfer in the laminar boundary layer driven by the stretching sheet subject to free stream pressure gradient. The fluid is assumed to be viscous incompressible and electrically conducting. By using similarity transformation, we reduce the unsteady boundary layer equations to nonlinear ordinary differential equations. Numerical solutions of out coming nonlinear differential equations are found by using a combination of Runge-Kutta-Fehlberg algorithm and shooting technique. Numerical results are displayed graphically by means of graphs. The effects of magnetic parameter, viscosity ratio parameter, unsteadiness parameter, Prandtl number and radiation parameter on velocity, temperature, skin friction and rate of heat transfer are thoroughly studied. The effect of radiation over the problem is significant and quantitative in nature.


Keywords


MHD, thermal radiation, stretching sheet, shooting method.

Full Text:

PDF pages 49-56

References


L. J Crane, Flow past a stretching plane, Z. Angew . Math. Phys, 21 (1970) 644-647.

E.M.A. Elbashbeshy, M.A.A. Bazid, Heat transfer over an unsteady stretching surface, Heat and Mass Transfer 41 (2004) 1–4.

Mohamed Abd El-Aziz, Radiation effect on the flow and heat transfer over an unsteady stretching sheet, International Communications in Heat and Mass Transfer, 36 (2009) 521-524.

S. Mukhopadhyay, Effect of thermal radiation on unsteady mixed convection flow and heat transfer over a porous stretching surface in porous medium, International Journal of Heat and Mass Transfer, 52(13–14) (2009) 3261–3265.

B.C. Sakiadis, Boundary-layer behavior on continuous solid surfaces : I. Boundary-layer equations for two-dimensional and axisymmetric flow, AIChE J., 7 (1961) 26-28.


Refbacks

  • There are currently no refbacks.


ISSN: 2332-2160

Impact Factor = 0.465 (2013)