TY - JOUR
TI - Hydromagnetic flow and heat transfer over a bidirectional stretching surface in a porous medium
AU - Ahmad Iftikhar
AU - Ahmed Manzoor
AU - Abbas Zaheer
AU - Sajid Muhammad
JN - Thermal Science
PY - 2011
VL - 15
IS - 12
SP - 205
EP - 220
PT - Article
AB - In this study, we present a steady three-dimensional magnetohydrodynamic  (MHD) flow and heat transfer characteristics of a viscous fluid due to a  bidirectional stretching sheet in a porous medium. The heat transfer analysis  has been carried out for two heating processes namely (i) the prescribed  surface temperature (PST) and (ii) prescribed surface heat flux (PHF). In  addition the heat transfer rate varies along the surface. The similarity  solution of the governing boundary layer partial differential equations is  developed by employing homotopy analysis method (HAM). The quantities of  interest are velocity, temperature, skin-friction and wall heat flux. The  results obtained are presented through graphs and tabular data. It is  observed that both velocity and boundary layer thickness decreases by  increasing the porosity and magnetic field. This shows that application of  magnetic and porous medium cause a control on the boundary layer thickness.  Moreover, the results are also compared with the existing values in the  literature and found in excellent agreement.