[gmori]

Hello everyone.
I am looking to install a small ventilation opening on the ceiling surface of a simple rectangular model, and I am planning to use topoSet and createPatch for this purpose.
The topoSetDict and createPatchDict are attached below.
topoSetDict:

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2006 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object topoSetDict;
}

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

actions
(
// inlet
{
name f0;
type faceSet;
action new;
source boxToFace;
box (0.19000 0.39000 3.49000)(0.59600 0.791 100);
}

// outlet
{
name f1;
type cellSet;
action new;
source boxToFace;
box (5.40000 3.20000 3.49000)(5.81000 3.61000 100);
}
);

createPatchDict:

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2006 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object createPatchDict;
}

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

pointSync false;

patches
(
{
name "inlet";
patchInfo
{
type patch;
}
constructFrom set;
set f0;
}
{
name "outlet";
patchInfo
{
type patch;
}
constructFrom set;
set f1;
}
);

However, when I do the createPatch, I get the following error.

Create time

Create polyMesh for time = 0

Reading "system/createPatchDict"

Adding new patch inlet as patch 14 from
{
type patch;
}

Adding new patch outlet as patch 15 from
{
type patch;
}


Read 64 faces from faceSet f0


--> FOAM FATAL IO ERROR:
unexpected class name cellSet expected faceSet
while reading object f1

file: /home/gaito/OpenFOAM/gaito-v2006/run/honban2/constant/polyMesh/sets/f1 at line 15.

From Foam::Istream& Foam::regIOobject::readStream(const Foam::word&, bool)
in file db/regIOobject/regIOobjectRead.C at line 170.

FOAM exiting

If anyone knows anything about this, please let me know. Also, I would like to know if there is any other way to add a small ventilation opening on a certain surface.
Thank you in advance.

[Yann]

Hello,

Lets go step by step. Here is your error:

--> FOAM FATAL IO ERROR:
unexpected class name cellSet expected faceSet
while reading object f1

the object f1 is expected to be a faceSet, but it is actually a cellSet.
Now lets have a look at your topoSetDict:

// outlet
{
name f1;
type cellSet;
action new;
source boxToFace;
box (5.40000 3.20000 3.49000)(5.81000 3.61000 100);
}

As you can see in topoSetDict, f1 is created as a cellSet rather than a faceSet, contrary to f0.

Cheers,
Yann

[gmori]

Hello.
Thank you for your reply!

I had overlooked the basics.
I changed it to faceset and it worked. Thank you!