, is a function of the distance to the nearest wall. It is computed as follows:
The length scale, , is a function of the distance to the nearest wall. It is computed as follows:
| (183) |
For the DES model, 
is a coefficient and 
is the largest distance between the cell center under consideration and the cell centers of the neighboring cells. The function 
is given by [28]:
| (184) |
where
| (185) |
The optional low-Reynolds number correction function 
is designed to prevent activation of the low-Reynolds number terms when in "LES" mode [28]. It is defined as:
| (186) |
where the damping functions 
, 
and 
are defined as appropriate for the DES model. The coefficient 
is a computed iteratively as a nonlinear function of the other model coefficients, as described in [28]. It has a value of 0.424 when the standard model coefficients are used.