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KE July 24, 2003 14:32

non-premixed combustion
I built a nonpremixed combustion model using Fluent, but the temperaure is very high (2850K) which is not I expected.

And how to include the Buoyancy effect into the simulation?

Your suggestions are welcomed!


Erwin July 25, 2003 05:36

Re: non-premixed combustion
If you're using a pdf model make sure it is non-adiabatic.

For buoyancy, click 'gravity' in the operating conditions panel and change z-parameter to -9.18 m/s2.

KE July 25, 2003 14:38

Re: non-premixed combustion
Thank you for your suggestion. But in the menu, non-precmixed combustion could be modeled either by "pdf" or "species transport". This time I will try "pdf"to see the effect.


Erwin July 28, 2003 07:55

Re: non-premixed combustion
If you used species transport, don't forget to include radiation to get rid of all that heat.

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