If you choose the Spalart-Allmaras model, the following options are available:
vorticity-based production (Vorticity- and Strain/Vorticity-Based Production)
strain/vorticity-based production (Vorticity- and Strain/Vorticity-Based Production)
viscous heating (always enabled for the density-based solvers) (Including the Viscous Heating Effects)
curvature correction (Including the Curvature Correction for the Spalart-Allmaras and Two-Equation Turbulence Models)
