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-   -   air-hydrogen combustion (http://www.cfd-online.com/Forums/fluent/49021-air-hydrogen-combustion.html)

steven August 15, 2008 17:06

air-hydrogen combustion
 
Hello,I'm trying to visualize a hydrogen combustion process in a simple geometry (a rectangle with 2 velocity inlet BC,one for air,one for hydrogen and a pressure outlet BC).I have troubles because a "reverse flow...at pressure outlet" message appears,consequently the calculation does not converge and the combustion does not occur(I used the "species transport" model). When I remove this model and simulate a simple air flow(species off),the reverse flow problem disappear and the calculation converges. Could you please help me? thanks


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