DOI: 10.21276/sjpms.2018.5.2.14

Pages: 194-197

This study examines the influence of heat absorption on magnetohydrodynamic (MHD) boundary layer flow and heat transfer over a stretching surface. A steady, laminar, electrically conducting fluid is considered in the presence of a uniform transverse magnetic field, and the effects of internal heat absorption are incorporated into the thermal energy equation. By applying appropriate similarity transformations, the governing partial differential equations are reduced to a coupled system of nonlinear ordinary differential equations, which are solved numerically using a shooting-based iterative scheme. The results reveal that heat absorption significantly alters the thermal boundary layer structure, leading to a marked reduction in fluid temperature and the associated heat transfer rate at the surface. The magnetic field is found to suppress fluid motion, enhance the velocity gradient near the sheet, and thereby increase skin friction. Parametric analyses show that increasing the heat absorption parameter reduces the local Nusselt number, while higher magnetic interaction parameters lead to thicker momentum boundary layers. These findings provide useful insight into magneto-thermal control mechanisms in processes such as polymer extrusion, metalworking, and electrically conducting coating flows.