Heat and Mass Transfer by MHD strongStagnationstrong-Point Flow of a Power.pdfVIP

INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING Volume 8 2010 Article A132 Heat and Mass Transfer by MHD Stagnation-Point Flow of a Power-Law Fluid towards a Stretching Surface with Radiation, Chemical Reaction and Soret and Dufour Effects S. M. M. EL-Kabeir Ali Chamkha A. M. Rashad South Valley University, elkabeir@ The Public Authority for Applied Education and Training, achamkha@ South Valley University, am rashad@ ISSN 1542-6580 c Copyright 2010 The Berkeley Electronic Press. All rights reserved. Heat and Mass Transfer by MHD Stagnation-Point Flow of a Power-Law Fluid towards a Stretching Surface with Radiation, Chemical Reaction and Soret and Dufour Effects S. M. M. EL-Kabeir, Ali Chamkha, and A. M. Rashad Abstract The thermal-diffusion and diffusion-thermo effects on heat and mass transfer by magnetohydrodynamic (MHD) mixed convection stagnation-point flow of a power-law non-Newtonian fluid towards a stretching surface in the presence of a magnetic field, thermal radiation and homogenous chemical reaction effects have been studied. A suitable set of dimensionless variables is used and similar equa- tions governing the problem are obtained. The resulting equations have the prop- erty that they reduce to various special cases previously considered in the litera- ture. An adequate implicit tri-diagonal finite-difference scheme is employed for the numerical solution of the obtained equations. Various comparisons with pre- viously published work are performed and the results are found to be in excellent agreement. Representative results for the velocity, temperature, and concentra- tion profiles as well as the local skin-friction coefficient, t