Heat source and radiation effects on magneto-convection flow of a viscoelastic fluid past a stretching sheet: Analysis with Mummer's functions

An analysis is carried out to study heat source and radiation effects on two-dimensional steady flow of an electrically conducting, incompressible, viscoelastic fluid (Walter's liquid-B') past a stretching sheet in the presence of transverse uniform magnetic field. Two cases are studied namely (i) the sheet with prescribed power law surface temperature (PST case) and (ii) the sheet with prescribed power law surface heat flux (PHF case). Kummer's functions are used to obtain temperature field and wall temperature gradient. The variations in the velocity and temperature field with change in parameters encountered into the equations are obtained and depicted graphically. The numerical values of the variations in wall temperature gradient due to change in physical parameters are presented in the tables. The results obtained have been discussed. (C) 2008 Published by Elsevier Ltd.