12.13.3 Vorticity- and Strain/Vorticity-Based Production

For the Spalart-Allmaras model, you can choose either Vorticity-Based Production or Strain/Vorticity-Based Production under Spalart-Allmaras Production in the Viscous Model dialog box. If you choose Vorticity-Based Production, ANSYS FLUENT will compute the value of the deformation tensor $S$ using this equation (in the separate Theory Guide); if you choose Strain/Vorticity-Based Production, it uses this equation . (in the separate Theory Guide)

(These options will not appear unless you have activated the Spalart-Allmaras model.)