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Chemical Reaction Maximum Step for Combustion CFD-STARCCM

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Old   November 18, 2019, 06:05
Post Chemical Reaction Maximum Step for Combustion CFD-STARCCM
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Stalline
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Hello, I need some help for the combustion simulation
I used StarCCM to do simulation, and usually for the chemical reaction, thermo and transport I use GRI 3.0 Mechanism (more than 300 reaction steps).

Actually I got good result when I use GRI 3.0 mech, even though when I check the OH mole fraction, it show little bit long concentration region, but the temperature looks fine


so I want to test using another chemical reaction and right now I want to use USC version II (more than 700 reaction steps).

when I tried to import it to StarCCM it just loading and take so much time, I think it is not normal. So is there any limit for the chemical reaction steps for StarCCM?

fyi, I usually use 30 cores for load the GRI and it is quite fast

I really appreciate if there is somebody can help me to overcome this problem
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Old   November 20, 2019, 15:04
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Lucky Tran
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There shouldn't be any limit...


Reading the reactions is simply reading a text file, using a million cores will not speed this up.
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Old   November 20, 2019, 23:21
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Stalline
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Quote:
Originally Posted by LuckyTran View Post
There shouldn't be any limit...


Reading the reactions is simply reading a text file, using a million cores will not speed this up.
Thank you Mr Lucky Tran, well I tried to import it and leave it for one day, and the mechanism still not imported yet, I don't know what happened actually
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