[Commercial meshers] Mesh export from fluent to openfoam: weird error messages

prasa · January 30, 2016, 13:15

HAI,

Why i'm getting this kind of message when fluet mesh to export to openfoam ?

Code:

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wyldckat · January 31, 2016, 13:25

Quick answer: Depends on the format version of your Fluent mesh and it also depends on the version of OpenFOAM you are using.
Those messages can either be ignored or are already fixed in one of the more recent versions of OpenFOAM.

Either way, please provide a simple example Fluent mesh so that we can reproduce the same error message.

prasa · January 31, 2016, 16:21

Thank you for replying.

This is gas - gas mixing model. Using Fluent version 16.2. Openfoam version 2.4.0.

I have changed the boundary condition according to fluent mesh. But still openfoam can not run the fluent mesh.

What can be the reasons ?

wyldckat · January 31, 2016, 16:29

Quick answer: Unfortunately you haven't provided enough information to diagnose the problem.
Please follow the steps written here: http://www.cfd-online.com/Forums/ope...-get-help.html - this way it will be easier to diagnose the problem.

Otherwise, you're asking for us to guess what the problem is out of more than 1000 possible reasons as to why your case is not working on OpenFOAM

.

prasa · February 4, 2016, 06:25

Hai,

Now I have this issue corant number rising continuesly give error massege, I'm using icoFoam solver. following error massege comes, what can be the reasons ?

Code:

/*---------------------------------------------------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.4.0                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
Build  : 2.4.0-f0842aea0e77
Exec   : icoFoam
Date   : Feb 04 2016
Time   : 12:11:05
Host   : "meeseeks-Precision-Tower-7810"
PID    : 3746
Case   : /home/meeseeks/prasa/run/model3
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Allowing user-supplied system call operations

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

Create mesh for time = 0

Reading transportProperties

Reading field p

Reading field U

Reading/calculating face flux field phi


Starting time loop

Time = 5e-05

Courant Number mean: 6.71136e-05 max: 0.0518149
smoothSolver:  Solving for Ux, Initial residual = 1, Final residual = 1.38584e-06, No Iterations 3
smoothSolver:  Solving for Uy, Initial residual = 1, Final residual = 5.94309e-06, No Iterations 3
smoothSolver:  Solving for Uz, Initial residual = 0, Final residual = 0, No Iterations 0
DICPCG:  Solving for p, Initial residual = 1, Final residual = 7.70462e-07, No Iterations 164
time step continuity errors : sum local = 1.03434e-10, global = 2.72659e-12, cumulative = 2.72659e-12
DICPCG:  Solving for p, Initial residual = 0.00784595, Final residual = 9.57557e-07, No Iterations 124
time step continuity errors : sum local = 2.06591e-08, global = 2.60165e-10, cumulative = 2.62891e-10
ExecutionTime = 0.73 s  ClockTime = 1 s

Time = 0.0001

Courant Number mean: 0.0151534 max: 0.374485
smoothSolver:  Solving for Ux, Initial residual = 0.606285, Final residual = 9.33117e-07, No Iterations 3
smoothSolver:  Solving for Uy, Initial residual = 0.13063, Final residual = 7.57316e-06, No Iterations 2
smoothSolver:  Solving for Uz, Initial residual = 0.332338, Final residual = 8.93221e-06, No Iterations 2
DICPCG:  Solving for p, Initial residual = 0.142013, Final residual = 8.82601e-07, No Iterations 143
time step continuity errors : sum local = 2.16199e-08, global = -6.83841e-11, cumulative = 1.94507e-10
DICPCG:  Solving for p, Initial residual = 0.0453243, Final residual = 8.11834e-07, No Iterations 131
time step continuity errors : sum local = 7.20617e-09, global = -2.82476e-11, cumulative = 1.6626e-10
ExecutionTime = 1.08 s  ClockTime = 1 s

Time = 0.00015

Courant Number mean: 0.0158302 max: 0.561537
smoothSolver:  Solving for Ux, Initial residual = 0.181653, Final residual = 6.75105e-07, No Iterations 3
smoothSolver:  Solving for Uy, Initial residual = 0.0507999, Final residual = 2.53766e-06, No Iterations 2
smoothSolver:  Solving for Uz, Initial residual = 0.249424, Final residual = 8.27343e-07, No Iterations 3
DICPCG:  Solving for p, Initial residual = 0.522183, Final residual = 9.40058e-07, No Iterations 140
time step continuity errors : sum local = 5.53735e-09, global = 9.29897e-12, cumulative = 1.75559e-10
DICPCG:  Solving for p, Initial residual = 0.10772, Final residual = 7.87431e-07, No Iterations 128
time step continuity errors : sum local = 1.57164e-09, global = 2.80607e-11, cumulative = 2.03619e-10
ExecutionTime = 1.42 s  ClockTime = 1 s

Time = 0.0002

Courant Number mean: 0.0157345 max: 0.557623
smoothSolver:  Solving for Ux, Initial residual = 0.0260866, Final residual = 3.24105e-06, No Iterations 2
smoothSolver:  Solving for Uy, Initial residual = 0.00990692, Final residual = 6.46839e-07, No Iterations 2
smoothSolver:  Solving for Uz, Initial residual = 0.0538437, Final residual = 2.93782e-06, No Iterations 2
DICPCG:  Solving for p, Initial residual = 0.349896, Final residual = 9.11121e-07, No Iterations 139
time step continuity errors : sum local = 1.33925e-09, global = -1.13943e-11, cumulative = 1.92225e-10
DICPCG:  Solving for p, Initial residual = 0.0431763, Final residual = 8.98031e-07, No Iterations 132
time step continuity errors : sum local = 9.07484e-10, global = -2.82289e-11, cumulative = 1.63996e-10
ExecutionTime = 1.76 s  ClockTime = 2 s

Time = 0.00025

Courant Number mean: 0.0157019 max: 0.550726
smoothSolver:  Solving for Ux, Initial residual = 0.0120567, Final residual = 2.41214e-06, No Iterations 2
smoothSolver:  Solving for Uy, Initial residual = 0.00481902, Final residual = 6.04422e-07, No Iterations 2
smoothSolver:  Solving for Uz, Initial residual = 0.0239811, Final residual = 9.86613e-07, No Iterations 2
DICPCG:  Solving for p, Initial residual = 0.190656, Final residual = 8.03269e-07, No Iterations 136
time step continuity errors : sum local = 7.23939e-10, global = -1.28889e-13, cumulative = 1.63867e-10
DICPCG:  Solving for p, Initial residual = 0.0155782, Final residual = 9.49934e-07, No Iterations 125
time step continuity errors : sum local = 7.76001e-10, global = -1.30238e-11, cumulative = 1.50843e-10
ExecutionTime = 2.08 s  ClockTime = 2 s

Time = 0.0003

Courant Number mean: 0.0156726 max: 0.654244
smoothSolver:  Solving for Ux, Initial residual = 0.00879693, Final residual = 1.94545e-06, No Iterations 2
smoothSolver:  Solving for Uy, Initial residual = 0.00383515, Final residual = 6.77615e-07, No Iterations 2
smoothSolver:  Solving for Uz, Initial residual = 0.0171416, Final residual = 6.29931e-07, No Iterations 2
DICPCG:  Solving for p, Initial residual = 0.116409, Final residual = 8.701e-07, No Iterations 134
time step continuity errors : sum local = 6.62414e-10, global = 2.8479e-13, cumulative = 1.51128e-10
DICPCG:  Solving for p, Initial residual = 0.00560623, Final residual = 9.80388e-07, No Iterations 122
time step continuity errors : sum local = 7.07401e-10, global = 5.86687e-12, cumulative = 1.56995e-10
ExecutionTime = 2.4 s  ClockTime = 2 s

Time = 0.00035

Courant Number mean: 0.0156595 max: 0.870647
smoothSolver:  Solving for Ux, Initial residual = 0.00727937, Final residual = 1.73164e-06, No Iterations 2
smoothSolver:  Solving for Uy, Initial residual = 0.00348196, Final residual = 1.55832e-06, No Iterations 2
smoothSolver:  Solving for Uz, Initial residual = 0.0140972, Final residual = 7.85586e-07, No Iterations 2
DICPCG:  Solving for p, Initial residual = 0.0964285, Final residual = 7.90232e-07, No Iterations 135
time step continuity errors : sum local = 5.6033e-10, global = 5.53276e-12, cumulative = 1.62528e-10
DICPCG:  Solving for p, Initial residual = 0.00281709, Final residual = 9.23352e-07, No Iterations 96
time step continuity errors : sum local = 6.50587e-10, global = -3.56866e-11, cumulative = 1.26841e-10
ExecutionTime = 2.69 s  ClockTime = 3 s

Time = 0.0004

Courant Number mean: 0.015657 max: 1.19054
smoothSolver:  Solving for Ux, Initial residual = 0.00658232, Final residual = 2.7559e-06, No Iterations 2
smoothSolver:  Solving for Uy, Initial residual = 0.00352735, Final residual = 3.16808e-06, No Iterations 3
smoothSolver:  Solving for Uz, Initial residual = 0.0127143, Final residual = 6.00431e-06, No Iterations 2
DICPCG:  Solving for p, Initial residual = 0.111259, Final residual = 9.04817e-07, No Iterations 138
time step continuity errors : sum local = 6.60456e-10, global = 2.80977e-11, cumulative = 1.54939e-10
DICPCG:  Solving for p, Initial residual = 0.00427442, Final residual = 7.9171e-07, No Iterations 127
time step continuity errors : sum local = 6.10697e-10, global = -2.55804e-12, cumulative = 1.52381e-10
ExecutionTime = 3.02 s  ClockTime = 3 s

Time = 0.00045

Courant Number mean: 0.0156727 max: 1.75486
smoothSolver:  Solving for Ux, Initial residual = 0.0066215, Final residual = 8.75173e-06, No Iterations 19
smoothSolver:  Solving for Uy, Initial residual = 0.00425823, Final residual = 8.65799e-06, No Iterations 36
smoothSolver:  Solving for Uz, Initial residual = 0.0124809, Final residual = 8.67935e-06, No Iterations 32
DICPCG:  Solving for p, Initial residual = 0.166059, Final residual = 9.73893e-07, No Iterations 143
time step continuity errors : sum local = 8.89965e-10, global = 4.2187e-11, cumulative = 1.94568e-10
DICPCG:  Solving for p, Initial residual = 0.0170893, Final residual = 9.57808e-07, No Iterations 137
time step continuity errors : sum local = 1.06481e-09, global = -2.37156e-11, cumulative = 1.70852e-10
ExecutionTime = 3.5 s  ClockTime = 3 s

Time = 0.0005

Courant Number mean: 0.0157411 max: 2.85948
#0  Foam::error::printStack(Foam::Ostream&) at ??:?
#1  Foam::sigFpe::sigHandler(int) at ??:?
#2  ? in "/lib/x86_64-linux-gnu/libc.so.6"
#3  Foam::symGaussSeidelSmoother::smooth(Foam::word const&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::Field<double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, unsigned char, int) at ??:?
#4  Foam::symGaussSeidelSmoother::smooth(Foam::Field<double>&, Foam::Field<double> const&, unsigned char, int) const at ??:?
#5  Foam::smoothSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
#6  ? at ??:?
#7  ? at ??:?
#8  ? at ??:?
#9  ? at ??:?
#10  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#11  ? at ??:?
Floating point exception (core dumped)
meeseeks@meeseeks-Precision-Tower-7810:~/prasa/run/model3$ ^C
meeseeks@meeseeks-Precision-Tower-7810:~/prasa/run/model3$

Please find below details,

P

Code:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.4.0                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       volScalarField;
    object      p;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions      [0 2 -2 0 0 0 0];

internalField   uniform 0;

boundaryField
{
    pressure_outlet
    {
        type            fixedValue;
     value           uniform 0;
    
    }

    velocity_inlet_small
    {
        type            zeroGradient;
    }

    velocity_inlet_large
    {
        type            zeroGradient;
    }
    walls
    {
        type            zeroGradient;
    }
}


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

U dictionary

Code:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.4.0                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       volVectorField;
    object      U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions      [0 1 -1 0 0 0 0];

internalField   uniform (0 0 0);

boundaryField
{
    pressure_outlet
    {
        type             zeroGradient;
        
    }

    velocity_inlet_small
    {
        type            fixedValue;
        value           uniform (0 -15 0);
    }

   velocity_inlet_large
    {
       type            fixedValue;
        value          uniform (10 0 0);
    }
   walls
    {
        type            fixedValue;
        value           uniform (0 0 0);
    }

}

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

controldict

Code:

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.4.0                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

application     icoFoam;

startFrom       startTime;

startTime       0;

stopAt          endTime;

endTime         1;

deltaT          0.00005;

writeControl    adjustableRunTime;

writeInterval   0.01;

purgeWrite      0;

writeFormat     ascii;

writePrecision  6;

writeCompression off;

timeFormat      general;

timePrecision   6;

runTimeModifiable true;

adjustTimeStep yes;

maxCo        1;
maxAlphaCo    1;
maxDeltaT    1;



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

Regards,
Prasanna.

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January 31, 2016, 13:25		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,975 Blog Entries: 45 Rep Power: 128	Quick answer: Depends on the format version of your Fluent mesh and it also depends on the version of OpenFOAM you are using. Those messages can either be ignored or are already fixed in one of the more recent versions of OpenFOAM. Either way, please provide a simple example Fluent mesh so that we can reproduce the same error message. __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

January 31, 2016, 16:21		#3
prasa New Member Prasanna Welahettige Join Date: Jan 2016 Location: Norway Posts: 28 Rep Power: 10	Thank you for replying. This is gas - gas mixing model. Using Fluent version 16.2. Openfoam version 2.4.0. I have changed the boundary condition according to fluent mesh. But still openfoam can not run the fluent mesh. What can be the reasons ?

January 31, 2016, 16:29		#4
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,975 Blog Entries: 45 Rep Power: 128	Quick answer: Unfortunately you haven't provided enough information to diagnose the problem. Please follow the steps written here: http://www.cfd-online.com/Forums/ope...-get-help.html - this way it will be easier to diagnose the problem. Otherwise, you're asking for us to guess what the problem is out of more than 1000 possible reasons as to why your case is not working on OpenFOAM . prasa likes this.