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Old   June 14, 2010, 14:29
Default Cyclone Simulation (simpleFoam)
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ernest
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Hi all I am a new user to OpenFOAM and I am trying to simulate flow in a cyclone. I imported the mesh from a program caedium which created the .ofm. I get the following errors when i try to run please help thank you. (I am using simplefoam). I have also enclosed the offending file (ie RASproperties). thanks!

Errors below:

/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 1.5 |
| \\ / A nd | Web: http://www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Exec : c:\cfd\OpenFOAM-1.5\bin\simpleFoam
Date : Jun 14 2010
Time : 20:07:31
Host : hostname
PID : 3416
Case : C:\Users\user\Documents\PhD\CFD\Openfoam\My-tutorials\cyclone\cyclone-flow
nProcs : 1

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

Create mesh for time = 0

Reading field p

Reading field U

Reading/calculating face flux field phi

Selecting incompressible transport model Newtonian
Selecting RAS turbulence model kEpsilon
Programme terminated with errors: exit code 1, status 0.
Error messages:

keyword kEpsilonCoeffs is undefined in dictionary "C:\Users\user\Documents\PhD\CFD\Openfoam\My-tutorials\cyclone\cyclone-flow\constant\RASProperties"

file: C:\Users\user\Documents\PhD\CFD\Openfoam\My-tutorials\cyclone\cyclone-flow\constant\RASProperties from line 14 to line 15.

From function dictionary::subDict(const word& keyword)
in file C:\tmp\OpenFOAM-1.5\src\OpenFOAM\db\dictionary\dictionary.C at line 288.

FOAM exiting



Offending file below:

/*--------------------------------*- C++ -*----------------------------------*/
// OpenFOAM 1.6.x
// Generated by Symscape's Caedium on: 14 Jun 2010 16:20:41, www.symscape.com

FoamFile
{
version 2.0;
format binary;
class dictionary;
object RASProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

RASModel kEpsilon;
turbulence on;
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Old   June 15, 2010, 06:23
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Hi Ernest and welcome!
your problem is quite clear:
Quote:
Originally Posted by erncyc View Post
Error messages:
keyword kEpsilonCoeffs is undefined in dictionary "C:\Users\user\Documents\PhD\CFD\Openfoam\My-tutorials\cyclone\cyclone-flow\constant\RASProperties";
you miss the coefficients definition for the kEpsilon model. The problem is not on your RASproperty file, but on constant/turbulenceProperty file (do you have it?). There something like:
Code:
kEpsilonCoeffs
{
    Cmu             Cmu [ 0 0 0 0 0 0 0 ] 0.09;
    C1              C1 [ 0 0 0 0 0 0 0 ] 1.44;
    C2              C2 [ 0 0 0 0 0 0 0 ] 1.92;
    alphaEps        alphaEps [ 0 0 0 0 0 0 0 ] 0.76923;
}
Should be defined.

Hope it helps.
Enjoy.

mad
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Old   June 15, 2010, 07:30
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Hi Maddalena...

thanx for your response...i have tried the code and now i get the following error (actually simplefoam.exe crashes)...i appreciate all your help

Programme terminated with errors: exit code 3, status 0.
Error messages:


Attempt to return dictionary entry as a primitive

file: C:\Users\user\Documents\PhD\CFD\Openfoam\My-tutorials\cyclone\cyclone-flow\system\fvSolution::U from line 27 to line 30.

From function ITstream& primitiveEntry::stream() const
in file C:\tmp\OpenFOAM-1.5\src\OpenFOAM\db\dictionary\dictionaryEntry\dic tionaryEntry.C at line 83.

FOAM aborting


This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
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Old   June 15, 2010, 09:03
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I guess the problem is with your fvSolution, probably a misspelled word. Try to crosscheck with one fvSolution file from the tutorial or with the userGuide examples.
Cheers,

mad
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Old   January 28, 2011, 10:40
Default 1.6.x into 1.5 doesn't go
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Sorry for the very delayed answer, but your problem is in trying to run a 1.6.x case in a 1.5 solver.
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