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

RSM value of fluctuating component of velocity

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 9, 2008, 14:55
Default RSM value of fluctuating component of velocity
  #1
Kushagra
Guest
 
Posts: n/a
Hi, I want to plot the rms value of fluctuating component of velocity. What variable should I select in CFX-Post? Please help. Thanks Kushagra
  Reply With Quote

Old   April 9, 2008, 17:12
Default Re: RSM value of fluctuating component of velocity
  #2
Usman
Guest
 
Posts: n/a
Hi Kushagra

Did you write statistics in CFX-Pre? If you have then you would find Velocity rms in variables list in CFX-Post.

Usman
  Reply With Quote

Old   April 9, 2008, 17:24
Default Re: RSM value of fluctuating component of velocity
  #3
Kushagra
Guest
 
Posts: n/a
Thanks Usman. Yes I wrote the statistic in CFX-Pre. But I am talking about the rms value of fluctuating component (u',v',w') not the mean value component (U,V,W). Which variable would represent the fluctuating component? Please suggest. Thanks, Kushagra

  Reply With Quote

Old   April 10, 2008, 05:26
Default Re: RSM value of fluctuating component of velocity
  #4
Usman
Guest
 
Posts: n/a
Kushagra you should find in the list of you variables "Velocity trn rms" and then respective components below it. This is what you need to plot rms values.

I hope you had selected rms values when you wrote statistics and not the mean values?

Usman
  Reply With Quote

Old   April 10, 2008, 08:32
Default Re: RSM value of fluctuating component of velocity
  #5
Bart
Guest
 
Posts: n/a
Wait, are you talking about turbulent fluctuations or the deviation from average values in a RANS transient run? The latter can be send to output when doing a transient run by specifying in the value list for your .trn files. CFX will not give you the turbulent fluctuations of the velocity components (it's a RANS code), I think.

Bart
  Reply With Quote

Old   April 10, 2008, 15:20
Default Re: RSM value of fluctuating component of velocity
  #6
Kushagra
Guest
 
Posts: n/a
thanks very much Usman. It helps. Kushagra
  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
how find fluctuating velocity Max CFX 21 June 25, 2012 00:21
Results of CFX Simulations Sof_70_Usthb CFX 3 July 9, 2011 06:15
---y component of velocity i.e. V velocity mech FLUENT 1 May 26, 2006 11:32
how to get fluctuating component l.g.patil FLUENT 0 February 9, 2002 12:57
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 19:52.