CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT > Fluent Multiphase

Surface tension modelling

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 6, 2020, 23:08
Default Surface tension modelling
  #1
Member
 
Anshuman Sinha
Join Date: Oct 2018
Posts: 70
Rep Power: 8
Anshs is on a distinguished road
I am modeling multiphase flow, with water (green) , oil (red) , air (blue). The water is flowing through the oil, but I am having results where the air is coming in between water and oil. and separating water and oil. I think it's because of surface tension modeling.

Why is the air coming in between water and oil? Thanks

phases:

Screenshot 2020-06-07 at 7.31.13 AM.jpg

Surface tension modeling:

surface.png
Anshs is offline   Reply With Quote

Old   June 9, 2020, 02:17
Default
  #2
Senior Member
 
rupak504's Avatar
 
Lolita
Join Date: Aug 2016
Posts: 118
Rep Power: 10
rupak504 is on a distinguished road
Quote:
Originally Posted by Anshs View Post
I am modeling multiphase flow, with water (green) , oil (red) , air (blue). The water is flowing through the oil, but I am having results where the air is coming in between water and oil. and separating water and oil. I think it's because of surface tension modeling.

Why is the air coming in between water and oil? Thanks

phases:

Attachment 78220

Surface tension modeling:

Attachment 78221
What's the outlet boundary condition?
rupak504 is offline   Reply With Quote

Old   June 9, 2020, 09:53
Default
  #3
Member
 
Anshuman Sinha
Join Date: Oct 2018
Posts: 70
Rep Power: 8
Anshs is on a distinguished road
Quote:
Originally Posted by rupak504 View Post
What's the outlet boundary condition?
Right side, you may like to refer to this figure:

Screenshot 2020-06-09 at 6.22.03 PM.jpg
Anshs is offline   Reply With Quote

Old   June 10, 2020, 16:05
Default
  #4
Senior Member
 
rupak504's Avatar
 
Lolita
Join Date: Aug 2016
Posts: 118
Rep Power: 10
rupak504 is on a distinguished road
Quote:
Originally Posted by Anshs View Post
Right side, you may like to refer to this figure:

Attachment 78264
The air might be coming in between water and oil due to entrainment.
rupak504 is offline   Reply With Quote

Reply

Tags
fluent, multiphase, surface tension model


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
Help!! customize surface tension term in interFoam w051cxw OpenFOAM Programming & Development 5 February 12, 2016 15:56
[Gmsh] Problem with Gmsh nishant_hull OpenFOAM Meshing & Mesh Conversion 23 August 5, 2015 03:09
surface tension gradient using UDF; surface tension gradient as function of temperatu marimuthusundar Fluent UDF and Scheme Programming 0 June 21, 2012 05:48
Surface Tension Test Cases sega OpenFOAM Running, Solving & CFD 2 March 8, 2011 13:19
surface tension gradient on a free surface Abrem FLUENT 1 April 30, 2006 04:41


All times are GMT -4. The time now is 06:18.