- **OpenFOAM Running, Solving & CFD**
(*https://www.cfd-online.com/Forums/openfoam-solving/*)

- - **Prandtl's one-equation RAS turbulence model**
(*https://www.cfd-online.com/Forums/openfoam-solving/115605-prandtls-one-equation-ras-turbulence-model.html*)

Prandtl's one-equation RAS turbulence modelHi every Foamers,
I would like to run a steady-state external aerodynamics in Atmospheric Boundary Layer, using the Prandtl's one-equation model with L the mixing length being proportional to the wall distance (something similar to wallDist(mesh_) from LES PrandtlDelta ). But I can't find any RAS turbulence models ( incompressibleRASModels, Foam user guide p.U-100) corresponding! The unique 1 equation model is Spalart-Allmaras but seems very complicated for me.Does anybody has already implemented the Prandtl's one-equation model for RAS incompressible model ? It seems quite simple to do so. Do you know why it has not been done within OpenFOAM ? |

Searching for the same,
Any luck!? |

Hi,
unfortunately, no. No answers, and I did not find. I know another software, Meteodyn , using this kind of turbulence modelling, but I wanted to make comparisons...WT |

Hey guys,
Actually the Prandlt model can be implemented as the oneEqEddies in LES framework. The values of the length is based on the physical of the flows. Ck = 1, Ce = 0.08. With verification, the turbulent kinetic energy is, as expected, the variance (as in RANS) and not the tke of the subgridscale (LES) |

All times are GMT -4. The time now is 18:10. |