xiaopingqiu / kOmegaSSTLowRe

Low Reynolds number kOmegaSST turbulence model for OpenFOAM

kOmegaSSTLowRe turbulence model

Low Reynolds number kOmegaSST turbulence model for OpenFOAM v3.0.x.

This code was originally written by RodgriguezFatz from the cfd-online forums. See the original thread at http://www.cfd-online.com/Forums/openfoam-programming-development/134102-komegasst-lowre-damping-fluent.html

Compilation/installation

Clone this repository into your OpenFOAM user directory and compile with wmake:

cd $WM_PROJECT_USER_DIR
git clone https://github.com/petebachant/kOmegaSSTLowRe.git
cd kOmegaSSTLowRe
wmake libso

Usage

In system/controlDict:

libs
(
    "libmyIncompressibleRASModels.so"
);

In constant/turbulenceProperties set

simulationType RAS;

RAS
{
    RASModel        kOmegaSSTLowRe;
    turbulence      on;
    printCoeffs     on;
}

Notes on compressibility

The current implementation only supports incompressible flow since no correction was applied to the original coded k and omega equations. This is due to the way phi_ is calculated:

	const surfaceScalarField& phi_ = this->alphaRhoPhi_;

The model equations can be extended to a compressible formulation, although it requires rewriting the equations for k and omega, and the model might become invalid.

Boundary conditions

Quantity	BC
p	zeroGradient
U	fixedValue (0 0 0)
nut	nutLowReWallFunction or fixedValue uniform 0
k	fixedValue uniform 1e-12
omega	omegaWallFunction