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Combustion at varying pressure

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Old   March 19, 2002, 05:15
Default Combustion at varying pressure
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Victory
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Hi! Anybody knows how to solve combustion in the channel with varyng pressure? PrePDF calculate properties of species at constant pressure. Victory
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Old   March 21, 2002, 19:22
Default Re: Combustion at varying pressure
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Greg Perkins
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I've never used this model, so don't really know...but is the change in the pressure in the channel significant in relation to the total operating pressure?

It depends on your problem I suppose, but often I would guess that pressure changes in the channel are small compared to the operating pressure and hence can be neglected as a first approximation.

What do others think?

Greg
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Old   March 22, 2002, 10:54
Default Re: Combustion at varying pressure
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Erwin
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You could always try the Magnussen model and compressible flow.
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Old   March 26, 2002, 05:43
Default Re: Combustion at varying pressure
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Victory
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Hi! Thank's for answers! I think, the Magnussen model leaves out of account the reaction kinetics

Victory
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Old   March 26, 2002, 09:30
Default Re: Combustion at varying pressure
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Erwin
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No, you input the reaction stoichiometry and kinetics parameters both. Try e.g. the methane-air two step mixture that is present in the Fluent database.
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