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-   -   Internal field temperature decreases after each iteration (Combustion Modeling) (https://www.cfd-online.com/Forums/openfoam-solving/82542-internal-field-temperature-decreases-after-each-iteration-combustion-modeling.html)

germinal November 29, 2010 09:30

Internal field temperature decreases after each iteration (Combustion Modeling)
 
hello!!

I have a very general question:


I try to simulate combustion. LES, non-premixed, one inlet for air (to stabilise the flame) and another one for fuel (300 K at both inlets and at other BCs), orthogonal simple mesh, no radiation model, no walls....a veery simple case.
The temperature (internal field) decreases at each iteration and this non-physical annoying phenomena depends on the velocity (high inlet velocities → temperature decreases faster). The flame temperature seems to be OK.


I am sure that there are several and very simple explanations for this problem. Can someone tell me a little bit about this?


Thanks!!


:-)

germinal November 29, 2010 14:16

Well.....with BCs I mean just boundaries....sorry

:-)


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