A question about methane combustion

hazemsaleem · March 12, 2014, 08:14

Hi
I simulate methane combustion using one step mechanism and the solution (contour) of methane mass fraction has a one value at all the surface with squares in all the figure (the figure is in the attachments)
any help

Note: the species equation for methane and the energy equation converge to a very small residual (about 10^-12)

ghost82 · March 12, 2014, 09:07

Hi,
from your picture you can see you have a constant value of methane fraction in all your domain: so blue is equal to red.
If your solution is ok, check the range/increase the number of countour levels.

Daniele

macfly · March 14, 2014, 10:30

Are you sure that combustion occurs?

Siddhu19 · March 14, 2014, 10:59

it means combustion is not occurring with your settings

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March 12, 2014, 09:07		#2
ghost82 Senior Member Rick Join Date: Oct 2010 Posts: 1,016 Rep Power: 27	Hi, from your picture you can see you have a constant value of methane fraction in all your domain: so blue is equal to red. If your solution is ok, check the range/increase the number of countour levels. Daniele

March 14, 2014, 10:30		#3
macfly Senior Member François Grégoire Join Date: Jan 2010 Location: Canada Posts: 392 Rep Power: 17	Are you sure that combustion occurs?

March 14, 2014, 10:59		#4
Siddhu19 New Member Siddhardha Seetala Join Date: Apr 2013 Posts: 6 Rep Power: 13	it means combustion is not occurring with your settings