Calculating change in Relative Humidity

Usama1034 · January 15, 2020, 07:55

I have inlet air and water temperature and initial Relative Humidity of the air.
I have a CFD model that can calculate the change in Temperature of water due to evaporation in a Control Volume.
However, change in temperature or evaporation is accompanied by an increase in Relative Humidity. How can I calculate the increase in Relative Humidity for my Control Volume? I can calculate increase in vapor mass (that's how I'm calculating evaporation energy)

LuckyTran · January 16, 2020, 11:14

What's your psychometric model? How do you define humidity?

It might also be helpful to describe any details of your model beyond "I have a CFD model"

January 15, 2020, 07:55	Calculating change in Relative Humidity	#1
Usama1034 New Member Muhammad Usama Join Date: Sep 2017 Posts: 6 Rep Power: 9	I have inlet air and water temperature and initial Relative Humidity of the air. I have a CFD model that can calculate the change in Temperature of water due to evaporation in a Control Volume. However, change in temperature or evaporation is accompanied by an increase in Relative Humidity. How can I calculate the increase in Relative Humidity for my Control Volume? I can calculate increase in vapor mass (that's how I'm calculating evaporation energy)

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January 16, 2020, 11:14		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,747 Rep Power: 66	What's your psychometric model? How do you define humidity? It might also be helpful to describe any details of your model beyond "I have a CFD model"