[Doflo]

Hello Forum,

I´m new here in CFD Online and also quite new in CFD.
My name is Dominik and we (a collegue of mine as well) are trying to simulate a probe in OpenFoam.
The programme is working and we already have got some results, which qualitative represent our measurement results. But only qualitative and not quantitative.
The thing is, we´re not sure if the pressure scale is actually the rigt one or ih we have to correct it by a factor, the density of the fluid (in this case: air) namely.
I´ve read that you have to correct the pressure by the density afterwards, because OpenFoam computes with density=1 by default.
Otherwise in the transportProperties dict, we typed in the dynamic viscosity which is already a function by the air density. That´s why I´m not sure, if we have to correct the pressure value by the density or not.

Mentioned below, you can see the p-dict.

Here some datas:
programme: BlueFCD 2.3
case: probe calibration, 3 dimensional
Mesher: snappyHex (probe) and BlockMesh
Turbulence Model: komega-SST
Solver: SimpleFoam

Thank you very much for your statements.
Best regards, Dominik


/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.2.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object p;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#include "include/initialConditions"

dimensions [0 2 -2 0 0 0 0];

internalField uniform 1000;

boundaryField
{
//- Set patchGroups for constraint patches
// #include "${WM_PROJECT_DIR}/etc/caseDicts/setConstraintTypes"


sonde_CreatedbyGmsh
{
type zeroGradient; //
}

inlet
{
type zeroGradient; //
}

outlet
{
type fixedValue;
value uniform 0;
}
Bohrung_vorn_CreatedbyGmsh
{
type zeroGradient;
}
Bohrung_unten_CreatedbyGmsh
{
type zeroGradient;
}
Bohrung_links_CreatedbyGmsh
{
type zeroGradient;
}
Bohrung_rechts_CreatedbyGmsh
{
type zeroGradient;
}
Bohrung_hinten_CreatedbyGmsh
{
type zeroGradient;
}

}

// ************************************************** *********************** //