On the use of wall functions as boundary conditions for twodimensional separated compressible flows
Abstract
A new and improved wall function method for compressible turbulent flows has been developed and tested. This method is applicable to attached and separated flows, to both high and lowReynolds number flows, and to flows with adiabatic and nonadiabatic surfaces. This wall function method has been applied to the LaunderSpalding kepsilon twoequation model of turbulence. The tests consist of comparisons of calculated and experimental results for: (1) an axisymmetrical transonic shockwave/boundarywave interaction flow at low Reynolds number in an adiabatic tube, (2) an axisymmetrical highReynolds number transonic flow over a nonadiabatic bump, and (3) a twodimensional supersonic highReynolds number flow on a nonadiabatic deflected flap. Each of these experiments had significant regions of flow separation. The calculations are performed with an implicit algorithm that solves the Reynoldsaveraged NavierStokes equations. It is shown that the results obtained agree very well with the data for the complex compressible flows tested.
 Publication:

AIAA, Aerospace Sciences Meeting
 Pub Date:
 January 1985
 Bibcode:
 1985aiaa.meetR....V
 Keywords:

 Boundary Conditions;
 Compressible Flow;
 Computational Fluid Dynamics;
 Separated Flow;
 Two Dimensional Flow;
 Wall Flow;
 Boundary Value Problems;
 Functions (Mathematics);
 KEpsilon Turbulence Model;
 NavierStokes Equation;
 Static Pressure;
 Velocity Distribution;
 Fluid Mechanics and Heat Transfer