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two different gas! Fluid pair model!

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Old   January 14, 2022, 15:49
Default two different gas! Fluid pair model!
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Hi every body
I want to model a domain with two gas.
the first inlet has ideal air but the second inlet has ideal Air (99%) and CO2 (1%).
in the basic setting of domain, in fluid and particle definition, I defined two gas.
this is the first time that I model this.
in the 'fluid pair model', how I should fill the parameters like as 'interface Len. Scale' and the other parameters???

is there any body help me?
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Old   January 14, 2022, 16:21
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What are you trying to model? Multiphase flow, or multicomponent flow?

I think you mean the latter, but not clear about your goals
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Old   January 15, 2022, 14:01
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Hi dear Opaque
yes I want to model multi component using CFX.
Co2 is the trace gas.
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Old   January 16, 2022, 19:33
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Then, you need to first create a Variable Composition Mixture

Inset Material, Option/Variable COmposition Mixture, select materials for the mixture

Insert Domain, Insert Fluid, Select Mixture Material you created,

Continue setting up the models.

There is no concept of Fluid Pair for a mixture.
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