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Separated flow and multiphase in the same analysis? |
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July 24, 2015, 15:07 |
Separated flow and multiphase in the same analysis?
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#1 |
New Member
Ignacio
Join Date: Sep 2013
Posts: 2
Rep Power: 0 |
Hi everyone!
I'm new at setting multiphase cases. I'm trying to simulate a pipe with a water-vapor mixture on the inside and any gas (air, co2) on the outside. A similar case would be a double pipe heat exchanger. It's important to say that there's no mass exchange, they are separated domains (zones). The problem is that when I define the multiphase water-vapor mixture, I'm allowed only to use that mixture for all the fluids in the cell zone settings, excluding my precious cover gas. Thank you in advance! |
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July 31, 2015, 11:35 |
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#2 |
Senior Member
Cees Haringa
Join Date: May 2013
Location: Delft
Posts: 607
Rep Power: 0 |
Split the domain in 2 zones in your meshing editor, using a named selection to specify each zone. Then, you can set conditions separately for each zone under 'cell zone conditions' in FLUENT
Best, Cees |
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July 31, 2015, 14:36 |
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#3 |
New Member
Ignacio
Join Date: Sep 2013
Posts: 2
Rep Power: 0 |
Thank you CeesH, but splitting the model into 2 or more zones won't help. As we did a little research, came up with this:
http://www.sciencedirect.com/science...17931012008174 The author states that "As stated in the FLUENT user’s guide, in modelling heat transfer in two separated fluid regions involving multispecies, only a single mixture material for the entire domain can be used." [3. Solution procedures - pg. 713] |
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Tags |
materials, multiphase, separted domains |
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