A wall function technique for accelerating PNS computations of compressible flows

AIAA, Fluid Dynamics Conference, 27th, New Orleans, LA, June 17-20, 1996 A description is given of the implementation of a wall function methodology in an existing PNS code. The wall function analysis used is a derivative of the defect stream function approach of Clauser (1956) and consists of an analytic description of the inner region based on a combined law of the wall and law of the wake. The outer region of the boundary layer is solved numerically using the algebraic turbulence model of Baldwin and Lomax. The wall shear stress predicted by the wall function method agrees well with that from a corresponding fully gridded calculation, while yielding considerable savings in computational cost. (Author)