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

Free Surface Flows

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 3, 1999, 09:13
Default Free Surface Flows
  #1
Ferrieira, V. G.
Guest
 
Posts: n/a
Dear friends,

By using K-epsilon turbulence model, what are the Boundary Conditions for the variables k and Epsilon on a free surface?

Thank you.
  Reply With Quote

Old   September 3, 1999, 11:23
Default Re: Free Surface Flows
  #2
John C. Chien
Guest
 
Posts: n/a
(1). This question has been asked here more than once. I don't think there was an answer. (2). I don't know how the turbulence interacts with the surface tension. So, I will have to assume that the free surface is locally flat, and the random motion of the fluid is not causing the fluid particles jumping out of the surface. (3). If this is acceptable as the first order approximation, a local symmetry plane condition can be used, that is zero gradient normal to the surface. ( it is probably hard to measure the distribution of TKE on a moving irregular free surface.)
  Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
CFX convergence issues with free surface adenlan CFX 3 September 2, 2011 06:43
CFX 4.4 New free surface option Viatcheslav Anissimov CFX 0 April 3, 2002 06:27
Free surface flows with solid transport Patrice Jaumouillie CFX 3 November 5, 2001 10:31
Free Surface Modeling willy FLUENT 11 July 17, 2001 07:07
Modeling Free Surface Flows Elliot Schwartz Main CFD Forum 5 August 25, 1998 21:03


All times are GMT -4. The time now is 03:52.