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Old   December 30, 2012, 07:03
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  #21
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Quote:
Originally Posted by jason_wy View Post
Prapanj,

We are still working on refinement and validation of pyrolysis model. The presentation is our working progress. We will release the pyrolysis capability when we are ready. Most probably some time next year.

To answer your other questions:
1. Again, no soot capability now in the released version. But one can easily add some simple soot model in.
2. ft is mixture fraction. fu is the fuel mass fraction. ftVar is the variance of mixture fraction.
3. Pr - mass fraction of product. Ox - mass fraction of oxdiant. Qr is the net radiant heat flux on boundaries.

Yi
Hi Dr Wang,

I am using the FirFoam code for my research and this code is very excellent. For the FireFoam in Openfoam 211, I found that the filtered mixture fraction and its variance are not more. Only the mass fractions of these species are solved. Do you still provide the version of FireFoam including solving the mixture fraction related quantities?

best,
H
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Old   August 12, 2013, 02:08
Default regarding fireFoam
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helo all,
can anybody tell me is there any document file with FireFoam that i can read and understand more about the FireFoam and diffrent terms used in it ?
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Old   August 12, 2013, 04:32
Default running firefoam tutorial
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helo ,
i tried to run the firefoam tutorial of smallpoolfire 2D but it is giving the error as shown below ,
can anybody help me how to get rid of this error ??

file: /home/yash/OpenFOAM/yash-2.2.0/run/tutorials/combustion/fireFoam/les/smallPoolFire2D/system/fvSchemes.ddtSchemes.default at line 20.

From function ddtScheme<Type>::New(const fvMesh&, Istream&)
in file /home/opencfd/OpenFOAM/OpenFOAM-2.2.0/src/finiteVolume/lnInclude/ddtScheme.C at line 79.
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Old   August 13, 2013, 06:40
Default Running of FireFoam
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I tried to run the tutorial of firefoam of smallpoolfire3D , it runs upto time step of 2.45 nicely but after that following error is coming ,. can anybody plz help me to understand why this error is coming ??

> FOAM FATAL IO ERROR:
error in IOstream "/home/yash/OpenFOAM/yash-2.2.0/run/tutorials/combustion/fireFoam/les/smallPoolFire3D/2.45/CH4" for operation Ostream& operator<<(Ostream&, const Scalar&)

file: /home/yash/OpenFOAM/yash-2.2.0/run/tutorials/combustion/fireFoam/les/smallPoolFire3D/2.45/CH4 at line 206683.

From function IOstream::check(const char*) const
in file db/IOstreams/IOstreams/IOstream.C at line 99.
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Old   August 16, 2013, 12:43
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Greetings yash.aesi,

For reference, there are two simple ways of running OpenFOAM tutorials:
  1. When the script Allrun exists, simply run:
    Code:
    ./Allrun
    When said script doesn't exist, check the parent folder of the case, because that folder might have the Allrun script.
  2. When the script doesn't exist, OpenFOAM provides the script foamRunTutorials, for which you simply need to run:
    Code:
    foamRunTutorials
    This script should also automatically call Allrun, if it can find it.
Now, the 2D case seemed to work fine for me, so my guess is that you didn't run the Allrun script.
As for the 3D case, it's really slow to run it and requires a lot of disk space. So far for me, it has been running for 3000s wall clock time, to reach the time 0.60s of simulation time and is currently occupying 1.1GB of disk space.

You can check how much space the case is occupying by running the command:
Code:
du -sh
And you can know how much disk is available, by running:
Code:
df -h
So my guesses are:
  • You ran out of disk space.
  • Or this tutorial case in 2.2.0 has a bug. If this is the case, I suggest that you upgrade to OpenFOAM 2.2.1.
Best regards,
Bruno
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Old   August 16, 2013, 12:50
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thanks Bruno, u r rite m running out of disk space ....
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