[student85]

Dear all
I am really stuck... I have to simulate fire propagation in a tube. i created the mesh. i filled it with methane oxygen (stoichiometric) and now i am using the eddy dissipation model. The problem is that i want to see a gradual consumption of CH4 in the tube and also i want to see a gradual increase in the reaction rate. BUT using the methane-oxygen WD1 reaction the only thing i can see is that it reacts (without putting energy) simultaneously... Can anyone explain why this is happening??? i would like to see a gradual increase in temperature due to exothermic reaction after i ignite it with heat source at the inlet.
Please help me.
thanks