[linox]

Hi there,

I am new to openFoam and will really need your help.

I am trying to run a simulation of flow in an open channel. I considered a very simple box-like structure to represent my channel.

I used the enGrid software to create the mesh and boundary conditions, including setting up the solver parameters.

Upon running the set-up in openFoam, i got the following error:

--> FOAM FATAL IO ERROR:
cannot find file

file: /home/hp/OpenFOAM/hp-3.0.1/run/myTrials/box/constant/turbulenceProperties at line 0.

From function regIOobject::readStream()
in file db/regIOobject/regIOobjectRead.C at line 73.

FOAM exiting
------------------------------------------

My interpretation of the error is that the turbulenceProperties file is missing in the Constant folder.
But the exported set-up from enGrid contain the following files in the Constant folder: RASProperties and transportProperties, along with the polymesh folder. And uses the simpleFoam solver.

The 0 - case folder contains the following files: epsilon, k, omega, p and U

I will greatly appreciate your help in dealing with this problem.

Regards
Linox

[mo_na]

Hi linox,

I have never used enGrid but it seems like you are right and the turbulenceProperties file is missing in your constant folder.
Guessing from the files in your 0 folder you are using a k-epsilon-model?
Then your turbulenceProperties file should look something like this:

*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.3.0                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "constant";
    object      turbulenceProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

simulationType  RAS;
RAS
{
RASModel        kEpsilon;

turbulence      on;

printCoeffs     on;
}

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

Also you said, that you are simulating an open channel? Are you also simulating the free surface? Then you have some more stuff missing. For example the alpha.water file in the 0 directory. I would maybe take a look at some tutorial, maybe this:
/OpenFOAM/OpenFOAM-X.X.X/tutorials/multiphase/interFoam/ras/waterChannel>
Hope this might help you!

Mona

[linox]

Hi Mona,

Thanks for the suggestion. You are right, I do have a lot of input files missing. I am now including the missing files with the help of the tutorials.

Will certainly consult your advice again if i get stocked

cheers!
linox