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Combustion of Methan-air mixture
Posted 06.04.2022, 13:59 GMT-4 Computational Fluid Dynamics (CFD), Heat Transfer, Chemical Reaction Engineering Version 6.0 0 Replies
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Hello friends,
I would like to simulate the premixed Methane and air reaction. Just one step reaction: CH4+2O2+7.52N2=>CO2+2H2O+7.52N2 But reaction is not happening in my model for an unclear reason. 1. "Laminar flow" and "heat transfer" alone are working quite fine. So, no problem in these solvers and nonisothermal flow Multiphysics. See study 1 that I disabled "transport of concentrated species". 2. "transport of concentrated species" looks to me right, and I followed the same strategy like examples in comsol gallery. 3. In the chemistry part, just we have 1 reaction of methane and entries for species cp, h, and s are imported from chemkin and I already checked they are correct. 4. to me. there is just one place that may be the source of problem, in regard to not happening any reaction. First, the reaction should happen for any set of reaction rates with regard to attached image. But it doesn’t for an unclear reason. Can anybody help? 5. FYI, In study 2, first I run the simulation with an external heat source to create a hot region (step1: stationary), then I use a time dependent step after disabling the external heat source. My model is also attached for your consideration. I really appreciate any help of you.
Best regards, Hamed
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Hello Hamed Faghanpour Ganji
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