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Cabin humidity calculations Fluent

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Old   July 9, 2015, 09:42
Default Cabin humidity calculations Fluent
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Milan
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Hello,

I am trying to predict the humidity on the windshield of the vehicle cabin. I am using species transport model for the humid air. Inlet air at the floor is coming at 31 deg celsius and mass fraction for it .0061 (80%RH based on outside air temperature of 10 deg). The two cabin occupants are adding 40g/hr of water vapor (i.e 1.2e-5 kg/sec and mass fraction of 1 for H20 species). When i run steady state simulations I am getting the RH on windshield above 1000%!!!!

Can anyone tell me what I am doing wrong?
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Old   July 14, 2015, 04:44
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Milan
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Ok,

I made a mistake. Two cabin occupants dont add only water vapor. They add saturated air into the cabin with 100% RH (.03444 mass fraction for h20). Results are obtained transient case and results are fine.
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