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-   -   simulating counterflow diffusion flame (http://www.cfd-online.com/Forums/fluent/78917-simulating-counterflow-diffusion-flame.html)

arlov August 5, 2010 15:32

simulating counterflow diffusion flame
 
dear friends,
I am trying to simulate methane-air counterflow diffusion flame under microgavity conditions in fluent 6.3
i need to specify specific heat as piecewise linear, viscosity by sutherlands law, for individual species and then take mass weighted average for the mixture,
I couldn't find an option to specify it for individual species, it available only for the mixture.
should I calculate the mass weighted averages of these quantities manually for the mixture?

arlov August 9, 2010 03:47

trouble with the flame
 
i got converged results by the method of taking mass weighted averages manually but the results are rather disappointing. though the flame stretch, temperatures and all are matching, its giving a cylindrical flame instead of a planar flame,
:confused:
please reply if you have any suggestions.. that would be a greatly helpful.
regards,
aromal:o


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