Wall-function boundary conditions in the solution of the Navier-Stokes equations for complex compressible flowsTo make computer codes for two-dimensional compressible flows more robust and economical, wall functions for these flows, under adiabatic conditions, have been developed and tested. These wall functions have been applied to three two-equation models of turbulence. The tests consist of comparisons of calculated and experimental results for transonic and supersonic flow over a flat plate and for two-dimensional and axisymmetrical transonic shock-wave/boundary-layer interaction flows with and without separation. The calculations are performed with an implicit algorithm that solves the Reynolds-averaged Navier-Stokes equations. It is shown that results obtained agree very well with the data for the complex compressible flows tested, provided criteria for use of the wall functions are followed. The expected savings in cost of the computations and improved robustness of the code were achieved.
Document ID
19830058050
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Viegas, J. R. (NASA Ames Research Center Moffett Field, CA, United States)
Rubesin, M. W. (NASA Ames Research Center Moffett Field, CA, United States)