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12.19.4 Detached Eddy Simulation (DES) Modeling

If you enabled DES for the Spalart-Allmaras model as described at the beginning of this section, FLUENT will use Equation  12.8-1 to compute the value of the length scale $\tilde{d}$. By default, the empirical constant $C_{\rm des}$ is set to 0.65. You can change its value in the Cdes field under Model Constants. $C_{\rm des}$ is set to 0.61 for the Realizable $k$- $\epsilon$ and SST $k$- $\omega$ RANS models (Sections  12.8.2 and 12.8.3).


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© Fluent Inc. 2006-09-20