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12.18 Setting Up the Large Eddy Simulation Model

If you choose the LES model, the following subgrid-scale submodels are available (Section  12.19.15):

Figure 12.18.1: The Viscous Model Panel Displaying the Large Eddy Simulation Model Options
figure

The LES options that are available for the Smagorinsky-Lilly are The LES option that is available when the Kinetic-Energy Transport submodel is selected is the Dynamic Energy Flux Model.

It is also possible to modify the Model Constants, but this is not necessary for most applications. See Sections  12.3 through 12.9 for details about these constants. Note that C1-PS and C2-PS are the constants $C_1$ and $C_2$ in the linear pressure-strain approximation of Equations  12.7-5 and 12.7-6, and C1'-PS and C2'-PS are the constants $C'_1$ and $C'_2$ in Equation  12.7-7. 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 Equation  12.7-16.


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