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Is it possible to modify Janaf Model in OpenFoam 2.1.1? |
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November 13, 2012, 15:26 |
Is it possible to modify Janaf Model in OpenFoam 2.1.1?
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New Member
Traib
Join Date: Sep 2012
Posts: 27
Rep Power: 13 |
Hello there,
I am a new member and this is first post here so I am trying not to sound too stupid though I think my title itself betrays me. I have been working on supersonic combustion simulation and I think it has become quite obvious that I am destined to face the Janaf problem. I give some details below: The simulation is related to high-Mach number reacting flows so I am trying to use rhoReactingFoam since this seems like the best choice to me. Normally the temperature should reach around 3-4000K but there are some jumps before convergence and once the Janaf problem appears its hopeless. I have worked at lower Mach numbers in fluent and had not many problems but it fails at higher Machs. I have read several threads related to this problem here and I found this interesting thread by iyer.arvind (http://www.cfd-online.com/Forums/ope...naf-model.html) about this new Janaf model that uses 9 coefficients. The thread by Karam (http://www.cfd-online.com/Forums/ope...your-time.html) is very dicouraging but I think there are ways to modify the codes to suit my problem. Now the iyer.arvind's thread is old and the patch he provides is for older OF. So I tried to modify the janafThermo files but now I am confused. Is it even right to work that way? Is it possible to simply modify the source codes using newer models? I thought I should ask for suggestion before I start putting my efforts into it because earlier efforts by others appear very discouraging. Please reply if you have ideas about this. |
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Tags |
high mach number, rhoreactingfoam |
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