THERMODYNAMICAL MODELING OF BOUNDARY-LAYER FLOW WITH SUCTION AND INJECTION

the variational principle developed by Gyarmati embodying the principl es of non-equilibrium thermodynamics is employed to investigate the la minar boundary layer effect on wedge flows with suction and injection. The velocity function is assumed as a simple third-degree polynomial and the variational principle is formulated. The hydrodynamical bounda ry layer thickness is derived as the Euler-Lagrange equation of the va riational principle. The velocity profiles and skin friction values we re computed for various values of suction and injection parameter and wedge angle parameter. The comparison of the present solution with an available exact solution establishes the fact that the accuracy is rem arkable.