Indicates the clipping method used for and , for the and v2f models
0: clipping in absolute value
1: coupled clipping based on physical relationships
Useful if and only if iturb = 20, 21 or 50 ( and v2f models). The results obtained with the method corresponding to iclkep =1 showed in some cases a substantial sensitivity to the values of the length scale almax.
The option iclkep = 1 is therefore not recommended, and, if chosen, must be used cautiously.
Indicates if the term is taken into account in the velocity equation.
1: true
0: false in the velocity Useful if and only if iturb = 20, 21, 50 or 60.
This term may generate non-physical velocities at the wall. When it is not explicitly taken into account, it is implicitly included into the pressure.
Indicates if the coupling of the source terms of and or and is taken into account or not.
1: true,
0: false
If ikecou = 0 in model, the term in in the equation of is made implicit. ikecou is initialised to 0 if iturb = 21 or 60, and to 1 if iturb = 20. ikecou = 1 is forbidden when using the v2f model (iturb = 50).
Useful if and only if iturb = 20, 21 or 60 ( and models)
Indicates if the wall echo terms in LRR model are taken into account:
1: true,
0: false (default)
Useful if and only if iturb = 30 ( LRR).
It is not recommended to take these terms into account: they have an influence only near the walls, their expression is hardly justifiable according to some authors and, in the configurations studied with code_saturne, they did not bring any improvement in the results.
In addition, their use induces an increase in the calculation time.
The wall echo terms imply the calculation of the distance to the wall for every cell in the domain. See icdpar for potential restrictions due to this.
pseudo eddy viscosity in the matrix of momentum equation to partially implicit
1: true
0: false (default) The goal is to improve the stability of the calculation. The usefulness of irijnu = 1 has however not been clearly demonstrated.
Since the system is solved in incremental form, this extra turbulent viscosity does not change the final solution for steady flows. However, for unsteady flows, the parameter nswrsm should be increased.
Useful if and only if iturb = 30 or 31 ( model).