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

relative velocity

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 15, 2010, 10:52
Default relative velocity
  #1
Senior Member
 
Join Date: Jan 2010
Location: Germany
Posts: 268
Rep Power: 17
Zaktatir is on a distinguished road
hello,
i am working with Ansys CFX but i think the question is quite general..

how can i calculate the relative velocity between air (continuous) flowing over water (continuous) ..i need a mean value that means a difference between the velocity in the air core flow and in the water layer because the velocity (inhomogeneous calculation) at the Void_Level=0.5 is near zero (since there is a jump at the interphase).

Or how can i create a quite good relative difference in order to calcluate wave lengths and growth rate of the expect waves and model then a drops diameter. In all the theroies they are using constant velocities but it is inconvenient in my case: turbulent flows, turbulent velocity profile.


thxx for any ideaaa
Zaktatir 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
how to derive relative velocity in MRFSimpleFoam? renyun0511 OpenFOAM Running, Solving & CFD 24 June 8, 2017 03:23
Problem Interface Solid Fluid with wall velocity Solver v12 hills1 CFX 2 October 12, 2009 06:36
relative velocity vectors carno FLUENT 0 May 9, 2008 07:59
Neumann pressure BC and velocity field Antech Main CFD Forum 0 April 25, 2006 03:15
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 06:13


All times are GMT -4. The time now is 22:24.