Practical Comparison of Two Turbulent Models

摘要

A numerical study of a number of viscous compressible gas flows, using a one-parameter differential turbulence model of Spalart—Olmaras and another, obtained by changing the variables in the two-parameter SST model of Menter, is conducted. Calculations are based on Reynolds averaged two-dimensional Navier—Stokes equations, using a difference scheme of the fifth order of approxima-tion. The problems of a subsonic flat plate, spoon-formed cavern, Jones airfoil overflow, separated flow in front of the angle of compression and dissipation of a single vortex are considered. These results per-mit me to better define the limits of applicability of the turbulence models considered, and to note their possible shortcomings.