CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Post-Processing

streamline plot for multiphase problem

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 10, 2011, 12:04
Default streamline plot for multiphase problem
  #1
New Member
 
Tong Zhongyao
Join Date: Oct 2010
Posts: 10
Rep Power: 6
lionlove0903 is on a distinguished road
hello everyone,

I can't plot the proper streamline after I got the solution from interFoam with vof method. And I am using paraFoam and tecplot360. The problem is I want to plot the streamline in the liquid phase, but the softwares give out the streamline in the whole computational area.

this is the streamline I get in the tecplot360:


This is a picture in a published paper, and the author says he use the vof, too.


Can anyone tell me how to remove the gas phase and get the streamline like the second picture?

Thanks!
lionlove0903 is offline   Reply With Quote

Old   March 10, 2011, 14:02
Default
  #2
Senior Member
 
akidess's Avatar
 
Anton Kidess
Join Date: May 2009
Location: Delft, Netherlands
Posts: 918
Rep Power: 16
akidess will become famous soon enough
You can filter the streamlines from the second face e.g. using the threshold filter with alpha before the streamline filter, but that will not give you the same image. The velocity field in both results is fundamentally different. OpenFOAM's VOF algorithm solves a mixture momentum equation and thus gives you one velocity field that applies to both phases (the mixture), whereas I guess your literature result solves a coupled set of momentum equations (one for each phase).
akidess is offline   Reply With Quote

Old   March 14, 2011, 17:25
Default stream function iso line
  #3
Senior Member
 
Nima Sam
Join Date: Sep 2009
Location: Tehran, Iran
Posts: 1,092
Blog Entries: 1
Rep Power: 14
nimasam is on a distinguished road
Send a message via Yahoo to nimasam
i want to compare my result from InterFOAM with a literature which use a level set method and a mixture transport equation,
please look at attachment
all values in attached pictures except stream Function (sai) are all known, but i dont know how i can calculate stream Function when we have its directional gradient?


P.S.
i can not use streamFunction command because my geometry is axisymetric and cyclic .
Attached Images
File Type: png Screenshot.png (38.9 KB, 51 views)
nimasam is offline   Reply With Quote

Reply

Tags
interfoam, multiphase, streamline, tecplot

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
X-Y plot problem, please help tobytoby FLUENT 8 March 20, 2013 22:57
Problem Importing Geometry ProE to CFX fatb0y CFX 3 January 14, 2012 20:42
Can I solve this problem by Fluent? Kai_kc FLUENT 1 October 27, 2010 06:29
meaning of plot xy in 3d problem Fayyaz Hussain Asghar FLUENT 0 March 1, 2007 02:56
CFX 5.5.1 Streamline Plot Satchit Panse CFX 3 March 8, 2005 12:58


All times are GMT -4. The time now is 20:23.