INTEGRAL METHOD FOR CALCULATING TURBULENT SKIN FRICTION IN TWO-DIMENSIONAL INCOMPRESSIBLE SEPARATED FLOWS.
Date of Original Version
An integral method is presented for computing incompressible two-dimensional turbulent skin friction for separated flows based on the inner-variable theory. Using a velocity profile in the form of the logarithmic law and wake, continuity and momentum equations are integrated across the boundary layer in terms of inner-variables u** plus and y** plus . With the aid of correlations relating the wake parameters to the pressure gradient parameter, derived from experimental results of several near-separating and separated flows, the governing equations are reduced to a single differential equation in skin friction. Predictions by the theory for several separated flows show satisfactory agreement with experimental data.
Das, D. K., and F. M. White. "INTEGRAL METHOD FOR CALCULATING TURBULENT SKIN FRICTION IN TWO-DIMENSIONAL INCOMPRESSIBLE SEPARATED FLOWS.." AIAA Paper , (1986). doi:10.2514/6.1986-1068.