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ReactingFoam Laminar flame simulation transport properties

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Old   June 30, 2008, 16:49
Default Hi all, I am an OpenFOAM ne
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Gaurav Bansal
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Hi all,

I am an OpenFOAM newbie, and would be thankful if someone can answer my queries. I am simulating a laminar diffusion flame with two inlets and one outlet. One inlet has fuel coming in and other has air coming in. I could not find what transport properties is the code using ? i.e. where are the values of thermal diffusivity (heat conductivity) and mass diffusivity coded in ? Is it possible to use non-constant temperature dependent properties and how ? I could only find that we can use sutherland transport for viscosity and janafTHERMO for cp, but what about others ? Can we read in a CHEMKIN based tran.dat file ?
If anyone has a case setup for laminar premixed or non-premixed flame with non-constant transport properties, I would be really thankful if you can share it with me.

Thanks,
Gaurav
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Old   July 1, 2008, 11:54
Default Bansal, The code in which t
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E. David Huckaby
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Bansal,

The code in which the transport properties are calculated resides in $FOAM_SRC/thermophysicalModels/species/transport.

The viscosity is only a function temperature, however the Prandtl number has a dependence on the gas constant and specific heat and thus changes with composition in addition to the temperature.

The species diffusivity is calculated assuming a unity Schmidt number, (YEqn.H).

Also note that differential diffusion has been neglected from the energy equation,(../XiFoam/hEqn.H)

Based on my reading of the code, neither a chemkin like transport model nor any composition based viscosity model is available for reactingFoam.

hope this helps
Dave
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Old   November 3, 2010, 21:23
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S. Ali H.M.
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Two, questions
Is there any way that I can use constant flow properties like constant viscosity and constant alpha for a reactingFoam case?
How can I add a model that reads Transport files instead of using only sutherland model?
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Old   November 23, 2012, 16:03
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Quote:
Originally Posted by sahm View Post
Two, questions
How can I add a model that reads Transport files instead of using only sutherland model?
Hi Sahm, your question is mine too. did you figure anything out?
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