12.12 Setting Up the Large Eddy Simulation Model

If you choose the LES model, the following subgrid-scale submodels are available (Section  12.13.16):

• Smagorinsky-Lilly

• WALE

• Kinetic-Energy Transport

Figure 12.12.1: The Viscous Model Dialog Box Displaying the Large Eddy Simulation Model Options

The LES options that are available for the Smagorinsky-Lilly are

• Dynamic Stress

• Dynamic Energy Flux (available only when the Dynamic Stress Model is enabled)

• Dynamic Scalar Flux

The LES options that are available when the Kinetic-Energy Transport submodel is selected are Dynamic Energy Flux and Dynamic Scalar Flux.

It is also possible to modify the Model Constants, but this is not necessary for most applications. For more information about the constants, see this section through this section (in the separate Theory Guide). Note that C1-PS and C2-PS are the constants $C_1$ and $C_2$ in the linear pressure-strain approximation of this equation and this equation (in the separate Theory Guide), and C1'-PS and C2'-PS are the constants $C'_1$ and $C'_2$ in this equation (in the separate Theory Guide). C1-SSG-PS, C1'-SSG-PS, C2-SSG-PS, C3-SSG-PS, C3'-SSG-PS, C4-SSG-PS, and C5-SSG-PS are the constants $C_1$, $C_1^*$, $C_2$, $C_3$, $C_3^*$, $C_4$, and $C_5$ in the quadratic pressure-strain approximation of this equation (in the separate Theory Guide).