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July 25, 2016, 08:49 |
Three phase modelling
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#1 |
New Member
Richard
Join Date: May 2016
Posts: 16
Rep Power: 10 |
Hello,
I am trying to model a bubble column consisting of water as the liquid phase with a oil layer on top, and air injection through a nozzle at the bottom of the column . I started with a two phase (air-water) bubble column using the Eulerian method and this works well, but when I try to add a third phase for the oil layer it requires me to define a diameter and treats it like another gas phase. Is there another way in which I can include the oil phase in Fluent? Thanks, Richard |
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February 3, 2017, 05:49 |
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#2 |
New Member
Join Date: Jan 2015
Posts: 6
Rep Power: 11 |
Hello Richard,
I have similar problem. I'm trying to simulate two continuous phases and one dispersed. No success so far. Did you figure it out? Kind regards, Marta |
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February 3, 2017, 07:07 |
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#3 |
New Member
Richard
Join Date: May 2016
Posts: 16
Rep Power: 10 |
The Eulerian method only allows a maximum of one continous phase. All other phases need to have a diameter specified. So you can create 1 continous and 2 extra phases, but you would need to define an arbitrary diameter for one of your continous phases. Alternatively, you can convert the continous phase into a mixture phase by specifying two materials . However, there will be no interfacial forces between these two materials since they are part of the same phase
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February 3, 2017, 07:46 |
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#4 |
New Member
Join Date: Jan 2015
Posts: 6
Rep Power: 11 |
Thank you for reply.
I tried to "artificially" add dispersed phase to VOF model but i can't get no further than 1 sec of model time. I thought about UDF, but that will require learning of writing codes... Have you modeled with arbitrary diameter for one of phases? |
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February 3, 2017, 08:43 |
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#5 |
New Member
Richard
Join Date: May 2016
Posts: 16
Rep Power: 10 |
Yes I can simulate an extra liquid phase with an arbitrary diameter
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May 22, 2017, 18:50 |
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#6 |
New Member
Julio Herrera Venegas
Join Date: May 2017
Posts: 1
Rep Power: 0 |
Hi guys,
Actually, i am facing a similar problem. I need fill a confined space whit slurry (copper concentrate). My strategie is have two continuos phases (air + water) and one discrete phase (copper particle). However, i have divergence problems whit the simulation. Any idea how can i do this simulation? In specific, i cant set the volumetric fraction of discrete phase, even if i active the granular model for the discrete phase. Sorry for my bad english, is not my natural lenguage. |
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Tags |
bubble column, eulerian, fluent, multiphase, secondary phase |
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