Journal of Applied Fluid MechanicsJAFMMechanical Engineeringhttp://jafmonline.net1admin173535721735364510.36884/jafmenjalali1388410gregorian20097122online1fulltexten10.36884/jafm.2.02.11866Effects of Radiation and Variable Fluid Viscosity on Flow and Heat Transfer along a Symmetric WedgegeneralResearchRadiation effects on boundary layer flow and heat transfer of a fluid with variable viscosity along a symmetric wedge is
presented here. Fluid viscosity is assumed to vary as a linear function of temperature. The symmetry groups admitted
by the corresponding boundary value problem are obtained by using a special form of Lie group transformations viz.
scaling group of transformations. A third order and a second order coupled ordinary differential equation system
corresponding to the momentum and the energy equations are obtained. These equations are then solved numerically.
With the increase of temperature-dependent fluid viscosity parameter (i.e. with decreasing viscosity), the fluid velocity
increases up to the cross-over point (η =η0 ) (η0 ≈ 0.90 is the nearest numerical value of the cross-over point) and
after the crossing over point the fluid velocity is found to decrease but the temperature increases at a particular point.
The significant finding of this study is that, due to variable fluid viscosity, flow separation is controlled. The
temperature decreases with increasing value of radiation parameter and Prandtl number.Scaling group of transformations, wedge flow, radiation effect, temperature dependent fluid viscosity2934http://jafmonline.net/JournalArchive/download?file_ID=15236&issue_ID=200S.Mukhopadhyayswati_bumath@yahoo.co.in`NoDepartment of Mathematics, M.U.C. Women’s College, Burdwan-713104, W. B., India.`