Heat transfer analysis of a non-Newtonian fluid on a power-law stretched surface with suction or injection for uniform and cooled surface temperature

Heat transfer characteristics of a non-Newtonian fluid on a power-law stret ched surface with suction or injection were investigated Similarity solutio ns of the laminar boundary layer equations describing heal transfer flow in a quiescent fluid were obtained and solved numerically. Temperature profil es as well as the Nusselt number Nu, were obtained for two thermal boundary conditions; namely, uniform surface temperature (b = 0) and cooled surface temperature (b = -1) for different governing parameters such as Prandtl nu mber Pr, injection parameter d and power-law index a It was found that decr easing injection parameter d and power-law index n and increasing Prandtl n umber Pr enhanced the heat transfer coefficient.