[Time4Tea]

Hi, I am trying to use fluentMeshToFoam to convert a fluent mesh to OpenFOAM format; however, when I run the program, I get the following error:

<a lot of output like the following:>

...
...

Found end of section in unknown:$
Embedded blocks in comment or unknown:
�Embedded blocks in comment or unknown:\�
Found end of section in unknown:�
��ݻFound end of section in unknown:?
]�Embedded blocks in comment or unknown:��
Found end of section in unknown:=
�Embedded blocks in comment or unknown:�
▒�E��UEmbedded blocks in comment or unknown:M�
Found end of section in unknown:�
�n�I

--> FOAM FATAL IO ERROR: 
wrong token type - expected int32_t, found on line 0 the punctuation token ')'

file: IStringStream.sourceFile at line 0.

    From function Foam::Istream &Foam::operator>>(Foam::Istream &, int &)
    in file primitives/ints/int32/int32IO.C at line 62.

FOAM exiting

Other OF applications (blockMesh, snappyHexMesh) seem to work fine and the .msh file opens fine in fluent. Does anyone know what the problem might be?

[Time4Tea]

No-one has any idea about this?

[Time4Tea]

I also tried using fluent3DMeshToFoam and got a different error, as shown below:

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  6
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
Build  : 6
Exec   : fluent3DMeshToFoam 16_FTO_LRS6.msh
Date   : Jul 02 2019
Time   : 16:26:56
Host   : ***
PID    : ***
I/O    : uncollated
Case   : ***
nProcs : 1
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Dimension of grid: 3
Number of points: 2092605
Number of faces: 15563604
Number of cells: 7085600
--> FOAM Warning : Found unknown block of type: "3010"
    on line 14


--> FOAM FATAL ERROR: 
Do not understand characters: �
    on line 15

    From function int yyFlexLexer::yylex()
    in file fluent3DMeshToFoam.L at line 753.

FOAM exiting

Line 15 appears to be where the binary data begins in the .msh file. Should I report this as a bug?

[Antimony]

Hi,

Perhaps you want to check with another version of OF? If it works in say OF 5.x, then it is probably a bug in OF 6. Else, maybe something else is the issue.

Hope this helps.

Cheers,
Antimony

[Time4Tea]

@Antimony: Thanks for your reply. I am using OF on a shared system and they only have versions 6 and 1.7.1 installed. I tried it with 1.7.1 and got exactly the same error about not understanding characters on line 15.


I also tried it with a much simpler mesh (literally just a simple tube) and got exactly the same thing.

[Time4Tea]

Ah, I figured it out. In the ANSYS options, there is one that selects either binary or ASCII format for the mesh export. I changed it from binary to ASCII, re-exported the mesh and it now works fine.


I guess fluentMeshToFoam likes ASCII data, but not binary. Good to know

[Antimony]

Hi,

Yes, most of the tools in OF prefer the ASCII format - especially the ones that deal with conversion.

Cheers,
Antimony

[saba*]

Hi Time4Tea
I got exactly the same error, but my mesh format is ASCII and no binary. Do you have a solution to my problem?