Error versus y+ for Three Turbulence Models: Incompressible Flow Over a Unit Flat Plate

摘要

In order to facilitate the application of Computational Fluid Dynamics (CFD) tools by aerodynamic designers, an assessment of error was made for the Menter Shear Stress Transport (SST), Spalart-Allmaras, and Nichols-Nelson Hybrid (RANS/LES) SST turbulence models. The assessment was made for incompressible flow over a smooth flat plate of unit length. Correlations of the error in drag coefficient with initial grid point spacing, expressed in terms of y+, were discovered for each model. It was found that the correlations were nonlinear and could be expressed in terms of the sine function.