[vava10]

Hey,

I tried blockMesh command using compressible/sonicFoam/laminar/forwardStep
and it worked.
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: v2006 |
| \\ / A nd | Website: www.openfoam.com |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : _b45f8f6f58-20200629 OPENFOAM=2006
Arch : "LSB;label=32;scalar=64"
Exec : blockMesh
Date : Sep 22 2020
Time : 09:51:34
Host : LAPTOP-A0NOGRUJ
PID : 604
I/O : uncollated
Case : /home/sam/OpenFOAM/OpenFOAM-v2006/tutorials/compressible/sonicFoam/laminar/forwwardStep_1
nProcs : 1
trapFpe: Floating point exception trapping enabled (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 5, maxFileModificationPolls 20)
allowSystemOperations : Allowing user-supplied system call operations

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

Creating block mesh from "system/blockMeshDict"
Creating block edges
No non-planar block faces defined
Creating topology blocks
Creating topology patches

Creating block mesh topology
--> FOAM Warning :
From Foam:olyMesh:olyMesh(const Foam::IOobject&, Foam:ointField&&, const cellShapeList&, const faceListList&, const wordList&, const Foam::PtrList<Foam::dictionary>&, const Foam::word&, const Foam::word&, bool)
in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 915
Found 6 undefined faces in mesh; adding to default patch defaultFaces

Check topology

Basic statistics
Number of internal faces : 2
Number of boundary faces : 14
Number of defined boundary faces : 14
Number of undefined boundary faces : 0
Checking patch -> block consistency

Creating block offsets
Creating merge list (topological search)...

Creating polyMesh from blockMesh
Creating patches
Creating cells
Creating points with scale 1
Block 0 cell size :
i : 0.024 .. 0.024
j : 0.02 .. 0.02
k : 0.1 .. 0.1

Block 1 cell size :
i : 0.024 .. 0.024
j : 0.02 .. 0.02
k : 0.1 .. 0.1

Block 2 cell size :
i : 0.024 .. 0.024
j : 0.02 .. 0.02
k : 0.1 .. 0.1


There are no merge patch pairs

Writing polyMesh with 0 cellZones
----------------
Mesh Information
----------------
boundingBox: (0 0 -0.05) (3 1 0.05)
nPoints: 10852
nCells: 5250
nFaces: 21175
nInternalFaces: 10325
----------------
Patches
----------------
patch 0 (start: 10325 size: 50) name: inlet
patch 1 (start: 10375 size: 40) name: outlet
patch 2 (start: 10415 size: 25) name: bottom
patch 3 (start: 10440 size: 125) name: top
patch 4 (start: 10565 size: 110) name: obstacle
patch 5 (start: 10675 size: 10500) name: defaultFaces

End

[vava10]

Hey.

I copied blockMeshDict from compressible/sonicFoam/laminar/forwardStep/system to wigleyHull/system and tried running blockMesh and it worked.

but when I tried to run the blockMeshDict from wigleyHull to (which I posted here) by copying it to forwardStep I got the same error

Do anyone have any guess why this might happen??

[vava10]

hey everyone,

Thank you for your help. I solved it.

the issue was theblockMeshDict didn't have permission to be read.
when I changed it it worked.

hope this might help someone in future.

Best regards
vava10

[B_R_Khan]

Originally Posted by gouravjee

I have been trying to make a simple cylinder geometry using blockMesh but i get the following error.
#

--> FOAM FATAL ERROR:
"/home/gourav/Desktop/mymesh/system/blockMeshDict"


From function int main(int, char**)
in file blockMesh.C at line 149.

FOAM exiting

/#
can you tell me what might be wrong?

Hey!

I am getting the same error while making a blockMesh for cylinder ...except that mine says From int main(int, char**)
in file findBlockMeshDict.H at line 61.

Were you able to find any solution?


Edit: Found the solution by adjusting the header

[B_R_Khan]

Hey!

I am getting the same error while making a blockMesh for cylinder ...except that mine says From int main(int, char**)
in file findBlockMeshDict.H at line 61.

Were you able to find any solution?

[vava10]

Hey,

I am really new to OpenFOAM. So I am not exactly sure. I tried to google your error. I could not find anything.

I resolved my issue by making sure all the syntax was correct. And I also had an issue with permission for the file. If I make corrections using notepad and then try to run the file in Linux first it wouldn't work. so I had to give permission to the file using chmod +rwx filename

Best regards
Vava10

[Ryuzaki]

Hello sir,
Can you please give more detail about it? What do you mean adjusting the header? I have the same issue :/

Originally Posted by B_R_Khan

Hey!

I am getting the same error while making a blockMesh for cylinder ...except that mine says From int main(int, char**)
in file findBlockMeshDict.H at line 61.

Were you able to find any solution?


Edit: Found the solution by adjusting the header

[Trojan1804]

I am facing a similar error while running the simulation file.

Error:

--> FOAM Warning :
    From static Foam::IOstreamOption::compressionType Foam::IOstreamOption::compressionEnum(const Foam::word&, Foam::IOstreamOption::compressionType)
    in file db/IOstreams/IOstreams/IOstreamOption.C at line 115
    Unknown compression specifier 'uncompressed', using compression off
--> FOAM Warning :
    From bool Foam::IOobject::readHeader(Foam::Istream&)
    in file db/IOobject/IOobjectReadHeader.C at line 111
    Reading "/home/shruti_g/OpenFOAM/shruti_g-v2012/run/double_pipe_heat_exchanger/system/blockMeshDict" at line 1
    First token could not be read or is not the keyword 'FoamFile'

Check header is of the form:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2012                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       IOobject;
    location    "system";
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //



--> FOAM FATAL ERROR: (openfoam-2012)
"/home/shruti_g/OpenFOAM/shruti_g-v2012/run/double_pipe_heat_exchanger/system/blockMeshDict"


    From int main(int, char**)
    in file findBlockMeshDict.H at line 61.

FOAM exiting

I have also attached blockmeshdict.zip file also.
Can anyone please have a look.

[prinux]

Hi Trojan,

You missed the following lines at the header in the blockMeshDict file:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2012                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ///*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2012                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

I've added them at the start and it seems to work fine now, although I had to interrupt in-between.