CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT > Fluent Multiphase

Air solubility in water

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   August 16, 2016, 09:20
Default Air solubility in water
New Member
Join Date: Aug 2016
Posts: 1
Rep Power: 0
Schurli is on a distinguished road

I'm trying to model a tank half filled with water, half filled with air with the mixture multiphase model. I have one pressure outlet and one massflow inlet.

What I want to simulate is the solubility of oxygen and nitrogen in the water, and that after a pressure drop oxygen and nitrogen will be released into the air (due to Henry's law). So I activated species-mass_transfer with Henry's law.

Before I even simulate the pressure drop, I just want to have the molar concentration of oxygen and nitrogen to due to the partial pressure in the air above the water.

After patching a molar concentration to the liquid which is near to the expected one, setting a very small timestep(up to e-06), setting the URFs all to 0.1 and using the most robust solver settings (first order), the solution still diverges directly.

Is anybody simulating something similar? Does anybody have an idea what the problem could be?

Thanks in advance
Schurli is offline   Reply With Quote


divergence, henry, law, solubility

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mass Transfer Between AIR and WATER Math13570 CFX 12 June 29, 2016 08:14
I am NOT getting right pressure at the air inlet in water column kcfd FLUENT 2 November 27, 2012 21:36
Multiphase model, water disperses in air bugra Main CFD Forum 1 January 30, 2010 10:57
Evaporatin water in the air Morteza FLUENT 1 August 20, 2008 05:04
Help!!!problems in air jet into water bath kim FLUENT 4 June 9, 2003 07:04

All times are GMT -4. The time now is 05:35.