June 22, 2018 at 5:45 pmNaiaraSubscriber
I am doing a combustion simulation with FGM model and the following characteristics:
1- Non-premixed combustion with heat loss
2-Fuel CH4 at 446K
3 Oxidizer preheated at 843K.
When selecting combustion model I choose the options of the attached images.
In Boundary conditions I define in fuel Mixture Fraction =1.
In Materials I modify absorption coefficient
I patch progress variable to 1, and I obtain the temperature contour attached. Something seems to be not working at flame shape is to small. Any suggestion?
Thank you in advance!
October 9, 2018 at 10:15 amraghavaSubscriber
I would try changing the "Turbulence chemistry interactions" to Turbulent flame speed to incorporate the effects of turbulence or is there any specific idea behind setting TCI to Finite rate? I hope this helps.
October 9, 2018 at 11:29 amseeta guntiAnsys Employee
How are you measuring the flame shape? By just looking at the temperature plot, it does not give you the flame shape. Since you are using FGM, you can plot the mean mixture fraction of any particular species that is supposed to be there in fuel rich or oxidizer rich zone.
February 18, 2021 at 1:35 amsreeraogubbaSubscriberHi SeetanThis is sreenivas, while at GE we have interacted. Do you have a FGM tutorial that can help users to go through it?.Thanks in AdvancenSreen
February 18, 2021 at 4:06 amYasserSelimaSubscribernhttps://www.youtube.com/watch?v=FEfCWx1JXqgnn
October 7, 2023 at 6:30 amMANISH SINGH `Subscriber
I am using premixed FGM model. I have a query regarding selection of source term for turbulent chemistry interaction in FGM. Fluent gives two options one is finite rate and another one is turbulent flame speed apparoach. I have read few literatures where they suggested that there is another approach of defining a source term for TCI is min (Finite rate, Turbulent flame speed).
Can anyone suggest how to avail this third option ? I am unable to see on the use interface. Is there anyway to do it using TUI commands ?
Any hep is higly appreciated.
Thanks & Regards
October 9, 2023 at 10:46 amRobForum Moderator
If the model is talking about source terms it's potentially UDF based. Are there any further details in the literature you've been reading?
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