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How define species in Fluent

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Old   May 12, 2015, 02:31
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Sandeep Rapol
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Hi,
I want define moist air (air + h20 ) using species in Ansys Fluent. Can anyone tell me the steps how to define moist air with help of Relative Humidity.

Thanks & Regards,
Sandeep Rapol
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Old   May 12, 2015, 03:36
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Hi there, first you must select species transport from 'Models'>Species.
You will now find H2O added as a material.

Then from boundary conditions you can select a source (can be a wall, inlet etc...) then edit and go to species. There you will find H2O and you can specify a mass fraction of H2O. If you are unsure you can use a humidity calculator to convert relative humidity into mass fraction (or psychrometric chart).

Hope this helps
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Old   May 12, 2015, 08:53
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abidi saad aissa
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thank you it is very usefull , but how can I use the condesation - evaporation effect in fluent because the moist air change the phase with the change in temperature ambiant.
thank you very much
I am waiing for the reply of any one know how to use condesation-evaporation effect
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Old   July 9, 2020, 14:40
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Aiouss,

I know this is many years later. But were you able to identify a way to simulate the condensation/evaporation effect?

All the best
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