[arnaud6]

Hello all !

I have been struggling to perform an operation on openfoam and I hope someone can help me to solve it.

Here is the situation
-> I have a fluent .msh file which I convert to openfoam using the fluent3DMeshToFoam utility.
-> Unfortunately, the "boundary" file resulting from this operation contains several boundaries with the same name
-> What I would like is merging them into a single boundary, so that I can run a solver afterthat !

For example, I have in my "boundary" file in /constant/polyMesh

boundary1
{
type wall;
inGroups 1(wall);
nFaces 2;
startFace 237652749;
}
boundary1
{
type wall;
inGroups 1(wall);
nFaces 350265;
startFace 237652751;
}
boundary1
{
type wall;
inGroups 1(wall);
nFaces 7;
startFace 238003016;
}


And I would like to have

------------------->

boundary1
{
type wall;
inGroups 1(wall);
nFaces 350274;
startFace 237652749;
}

Moreover, the best option for me would be to use an automatic process because I don't know a priori which duplicate boundaries are likely to be duplicated.

I precise that I cannot correct my .msh file before the conversion manipulation. So I would like to find a solution once the conversion to openfoam has been realised !
I am looking for a mesh utility to help but I can't find a correct one...

I hope it makes sense. i can add more details if this is not precise enough.

Your help will be much appreciated

[arnaud6]

No one has ever had this concern ?

I am thinking that it may be easier and quicker to correct the "boundary" file using a script rather than an openfoam utility.

I will let you know if I make progress on it !

[wyldckat]

Greetings Arnaud6!

Well, createPatch is what you're looking for... but the problem is that I don't know if OpenFOAM won't look at you funny when you try to use it with such a boundary file, since it's not meant to have more than one boundary with the same exact name

Either way, quoting from here: http://openfoamwiki.net/index.php/In...hing_for_files

find $FOAM_APP -name "*Dict"

In your case:

find $FOAM_APP $FOAM_TUTORIALS -name "createPatchDict"

And you'll find several example dictionary files that show you various examples on what you can do with this utility

Best regards,
Bruno

[arnaud6]

I was thinking ofd createPatch indeed but i have just realised that scripting is sufficient to perform this operation. The drawback with createPatch is that it would nneed first to load the mesh which is time consuming, while performing text operations can be really fast.