Semnan University Press Journal of Heat and Mass Transfer Research 2345-508X 3 1 2016 04 01 Slip flow of an optically thin radiating non-Gray couple stress fluid past a stretching sheet 21 30 405 10.22075/jhmtr.2016.405 EN Sanatan Das University of Gour Banga, Malda 732 103, WB, India Akram Ali University of Gour Banga, Malda 732 103, India Rabindra Nath Jana Jana Vidyasagar University, Midnapore 721 102, India Journal Article 2016 01 01 This paper addresses the combined effects of couple stresses, thermal radiation, viscous dissipation and slip condition on a free convective flow of a couple stress fluid induced by a vertical stretching sheet. The Cogley- Vincenti-Gilles equilibrium model is employed to include the effects of thermal radiation in the study. The governing boundary layer equations are transformed into a system of nonlinear differential equations, and solved numerically using the Runge-Kutta fourth order method with shooting technique. Numerical results are obtained for the fluid velocity, temperature as well as the shear stress and rate of heat transfer. The effects of the pertinent parameters on these quantities are examined. It is found that both the fluid velocity and temperature reduce in the presence of thermal radiation. Increasing values of the couple stress parameter thicken the momentum boundary layer. The slip parameter greatly influences the fluid flow and shear stress on the surface of the stretching sheet. https://jhmtr.semnan.ac.ir/article_405_e62dcca96469642dddc90bc6b8e76e91.pdf