An investigation of Entropy Generation inside the Boundary Layer over an Isothermal Wedge

The steady two-dimensional boundary layer flow over a wedge, which is called Falkner-Skan flow is studied numerically to analyze the entropy generation inside theboundary layer. Constant wall temperature with no-slip boundary condition for velocity has been considered. Applying the transformation of governing equationsincluding continuity, momentum and energy via similarity variables, a dimensionless equation forentropy generation inside the boundary layer is obtainedfor the first time. Analyzing the Bejan number, it is found that as Falkner-Skan power law parameterincreases, the share of generated entropy due to fluid friction in total entropy generation increases. Finally, the effects of different parameters on the entropygeneration are discussed and the physical interpretations of the results are explained in details

Keywords:

Entropy generation , Falkner-Skan , Boundary layer , Similarity solution