CALCULATION OF TURBULENT BOUNDARY-LAYERS WITH TRANSPIRATION AND PRESSURE-GRADIENT EFFECTS

The integral form of the momentum equation is solved by use of a combi ned law of the wall and wake for the velocity profile appropriate to a transpired turbulent boundary layer. This gives a nonlinear ordinary differential equation which is solved numerically to predict the skin friction coefficient, C-f, variation with distance, as well as integra l thicknesses, for both constant blowing fraction, F, and for F variab le with x along the surface. Predicted skin friction coefficients are compared to experimental data for both blowing and suction in both zer o and nonzero pressure gradients. Predictions compare well with the ex perimental values.