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Old   April 22, 2014, 17:32
Default gmshToFoam command
  #1
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Mauricio Vinassa
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Hello,
I am new in OpenFOAM, meshing and CFD, and I am doing my first steps into programming.
The thing is I need to transform the elements generated using Delaunay into gmsh to Voronoi elements. After a long research, I found that maybe gmshToFoam could help me to get a voronoi mesh.
I have a few questions:
1- am I right thinking that gmshToFoam would transform my Delaunay triangle into my Voronoi elements? My model currently has more than 7 MM elements, of course I need to simplified it, but still its wanna be a big model.

2- are you aware of any better method to transform Delaunay into Voronoi?

3- Do you realized where my mistake could be and why can't find the file? Trust me the file location is fine (Home->OpenFoam->mv-2.3.0)

I have been trying with this command but the following mistake appears:
ubuntu@ubuntu:~$ gmshToFoam /Home/OpenFoam/mv-2.3.0/cube.msh
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.3.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 2.3.0-f5222ca19ce6
Exec : gmshToFoam /Home/OpenFoam/mv-2.3.0/cube.msh
Date : Apr 22 2014
Time : 16:10:52
Host : "ubuntu"
PID : 13058
Case : /home/ubuntu
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Disallowing user-supplied system call operations

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

--> FOAM FATAL IO ERROR:
cannot find file

file: /home/ubuntu/system/controlDict at line 0.

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

FOAM exiting

I really appreciate any help you can give me with this.

Thank you very much
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Old   April 25, 2014, 07:36
Default cannot find file 'controlDict'
  #2
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Richel Bilderbeek
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The error is here:

Quote:
cannot find file

file: /home/ubuntu/system/controlDict at line 0.
Solution: add a file called 'controlDict' in the folder '/home/ubuntu/system'.

To give you a head start, here is an example, but Google yourself to suit your needs

Code:
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      controlDict;
}

application            sonicFoam;
startFrom           latestTime;
startTime           0;
stopAt              endTime;
endTime             7e-3;            
deltaT                 1e-8;
writeControl        adjustableRunTime;
writeInterval       1e-6;            
purgeWrite          0;
writeFormat         ascii;
writePrecision      6;
writeCompression     uncompressed;
timeFormat          general;
timePrecision       6;
runTimeModifiable     yes;
adjustTimeStep       no;
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Last edited by assert; April 25, 2014 at 07:37. Reason: layout
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