Step 3: Models

Models

1.   Enable the standard $k$- $\epsilon$ turbulence model with the enhanced near-wall treatment.

Models Viscous Edit...

(a)   Select k-epsilon in the Model list.

  The Viscous Model dialog box will expand.

(b)   Retain the default selection of Standard in the k-epsilon Model list.

(c)   Select Enhanced Wall Treatment in the Near-Wall Treatment list.

(d)   Click OK to close the Viscous Model dialog box.

  The ability to calculate a swirl velocity permits the use of a 2D mesh, so the calculation is simpler and more economical to run. This is especially important for problems where the enhanced wall treatment is used. The near-wall flow field is resolved through the viscous sublayer and buffer zones (that is, the first mesh point away from the wall is placed at a y $^+$ of the order of 1).

For details, see this section in the separate Theory Guide.