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

How to measure vortex shedding frequency? and how can I plot FFT?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 23, 2009, 10:36
Default How to measure vortex shedding frequency? and how can I plot FFT?
  #1
Member
 
Arash
Join Date: Dec 2009
Location: Denmark
Posts: 37
Rep Power: 7
arash_7444 is on a distinguished road
Dear all,

I am new in fluent, and I have two question
-how can i find vortex shedding freq. for cylinder in 2D in fluent?

-How can I plot fft in fluent? because it want input file? where can i find this input file in fluent?

Thank a lot in advance
arash_7444 is offline   Reply With Quote

Old   May 31, 2011, 06:18
Default fft frequency
  #2
New Member
 
amir
Join Date: Jan 2011
Posts: 10
Rep Power: 6
amirmohebbi is on a distinguished road
dear all
i have aproblem with fluent
isolve a flow field in a jet and i can not plot frequency versus position in jet
if anyone also have this problem and solve it
please help me in this situation


what is input file in FFT?
amirmohebbi is offline   Reply With Quote

Old   June 7, 2011, 07:39
Default
  #3
New Member
 
amir
Join Date: Jan 2011
Posts: 10
Rep Power: 6
amirmohebbi is on a distinguished road
Quote:
Originally Posted by arash_7444 View Post
Dear all,

I am new in fluent, and I have two question
-how can i find vortex shedding freq. for cylinder in 2D in fluent?

-How can I plot fft in fluent? because it want input file? where can i find this input file in fluent?

Thank a lot in advance
hi
you can go to solve/ monitor/surface
and create points that you want frequency of them
select the variable that you want monitored ots history by time
then run fluent again
its dat file create
then load this file in FFT for input file
amirmohebbi is offline   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



All times are GMT -4. The time now is 21:47.