CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Surface Tension term in two phase flows

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 17, 2007, 10:46
Default Surface Tension term in two phase flows
  #1
Soghrat
Guest
 
Posts: n/a
Hi,

I am simulating two phase flow using the level set method (finite volume).

I have some problems in descretizing the surface tension term. Could anyone help me to find a descretized surface tension term? I do not how to descretize it correctly.

Thanks,

  Reply With Quote

Old   April 20, 2007, 12:28
Default Re: Surface Tension term in two phase flows
  #2
CFDtoy
Guest
 
Posts: n/a
Compute gradient of volume fraction function to evaluate curvature

k=-grad (n) where n is the normal vector which is then =

n = - (grad C) / abs(grad C) where C is the color VOF function.

This is easily computed within the FV framework.

Then force term in source F = sigma*k

Hope this helps

CFDtoy
  Reply With Quote

Old   July 7, 2009, 10:20
Default
  #3
Senior Member
 
isabel
Join Date: Apr 2009
Location: Spain
Posts: 171
Rep Power: 17
isabel is on a distinguished road
force term in source would be F = sigma*k*(grad C)
isabel is offline   Reply With Quote

Reply

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
Surface tension problem. Kes FLUENT 0 May 19, 2008 22:49
Source Term used in Eulerian Model(Two phase) Padian FLUENT 1 May 19, 2008 03:47
Surface Tension term Soghrat Main CFD Forum 1 April 24, 2007 06:45
surface tension gradient on a free surface Abrem FLUENT 1 April 30, 2006 03:41
Modeling Free Surface Flows Elliot Schwartz Main CFD Forum 5 August 25, 1998 21:03


All times are GMT -4. The time now is 22:17.