Non-premixed ethelene+air combustion modeling

nileshjrane · July 27, 2010, 03:37

Dear all,

I am a newbie to OpenFOAM. Just installed OF 1.7.

I have to simulate a ramjet combustor for combustion of C2H6+air. Its non-premixed combustion. I am thinking of using PDF model (which is there in FLUENT) for this as it is better approach for such situations.

Could anyone tell me whethere PDF model is available in OpenFOAM? If not can i use some other model for this application? Any suggestion??

If i have to write the code for PDF model, can anyone help me in getting the theory of this model??

Thanks in advance..

smehdi609 · July 28, 2010, 12:59

The transported PDF model is not available in OpenFOAM. You can use reactingFoam for your non-premixed flame simulation, but in principle the transported PDF model is way better than PaSR model in reactingFoam.
If you want to write your own solver for reactingFoam (which is not easy by the way!) you may refer to the seminal paper by Pope in Progress in Energy and Combustion Sciente 1985. A better idea would be using a recent paper by D.C. Haworth in the same journal.

smehdi609 · July 28, 2010, 13:01

sorry, "if you want to write your own solver for PDF model"

l_r_mcglashan · July 28, 2010, 13:21

Or you could look into flamelets. If you have a flamelet solver it's easy to couple them to an openfoam solver.

nileshjrane · July 30, 2010, 03:58

thanx for the replies guys...

I think i got a starting point. I'll get back here if i have more doubts.

July 27, 2010, 03:37	Non-premixed ethelene+air combustion modeling	#1
nileshjrane Senior Member Nilesh Rane Join Date: Apr 2010 Posts: 122 Rep Power: 16	Dear all, I am a newbie to OpenFOAM. Just installed OF 1.7. I have to simulate a ramjet combustor for combustion of C2H6+air. Its non-premixed combustion. I am thinking of using PDF model (which is there in FLUENT) for this as it is better approach for such situations. Could anyone tell me whethere PDF model is available in OpenFOAM? If not can i use some other model for this application? Any suggestion?? If i have to write the code for PDF model, can anyone help me in getting the theory of this model?? Thanks in advance.. __________________ Imagination is more important than knowledge..

July 28, 2010, 13:21		#4
l_r_mcglashan Senior Member Laurence R. McGlashan Join Date: Mar 2009 Posts: 370 Rep Power: 23	Or you could look into flamelets. If you have a flamelet solver it's easy to couple them to an openfoam solver. __________________ Laurence R. McGlashan :: Website

July 30, 2010, 03:58		#5
nileshjrane Senior Member Nilesh Rane Join Date: Apr 2010 Posts: 122 Rep Power: 16	thanx for the replies guys... I think i got a starting point. I'll get back here if i have more doubts. __________________ Imagination is more important than knowledge.. Last edited by nileshjrane; July 30, 2010 at 06:06.

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July 28, 2010, 12:59		#2
smehdi609 Member M. Mahdi Salehi Join Date: Mar 2009 Location: Vancouver, BC, Canada Posts: 50 Rep Power: 17	The transported PDF model is not available in OpenFOAM. You can use reactingFoam for your non-premixed flame simulation, but in principle the transported PDF model is way better than PaSR model in reactingFoam. If you want to write your own solver for reactingFoam (which is not easy by the way!) you may refer to the seminal paper by Pope in Progress in Energy and Combustion Sciente 1985. A better idea would be using a recent paper by D.C. Haworth in the same journal.

July 28, 2010, 13:01		#3
smehdi609 Member M. Mahdi Salehi Join Date: Mar 2009 Location: Vancouver, BC, Canada Posts: 50 Rep Power: 17	sorry, "if you want to write your own solver for PDF model"