CFD Online Logo CFD Online URL
Home > Forums > FLUENT


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

LinkBack Thread Tools Display Modes
Old   March 25, 2012, 02:45
Default Using FFT in FLUENT
Join Date: Jan 2012
Posts: 59
Rep Power: 6
mahi007 is an unknown quantity at this point
Hello all

I am new to CFD and Fluent. I am simulating unsteady flow past circular cylinder. I got a sinusoidal variation in lift coefficient during simulation. I need to find strouhal frequency from graph.

How to use FFt in fluent to obtain frequency? Can someone guide me please

mahi007 is offline   Reply With Quote

Old   March 28, 2012, 18:55
New Member
Join Date: Mar 2012
Posts: 13
Rep Power: 7
DaddySpeleo is on a distinguished road
As I know - there is no embedded method for FFT.
You can write to file any values depending on time and then you can use any sowtware... MathCad, MatLAB... Most simple way - to see your function on the screen and find distance between peaks.
DaddySpeleo is offline   Reply With Quote

Old   March 29, 2012, 00:07
New Member
Join Date: Mar 2012
Posts: 3
Rep Power: 7
yash.task.91 is on a distinguished road
Hi..Even I am very new to Fluent and CFD but as far as I know, you can access the FFT facility by turning ON the acoustics option and then choosing the Williams model in it. You need to give the source of the sound and the receivers' locations. Then in graphics and animation you get the option to plot the FFT graph.
yash.task.91 is offline   Reply With Quote


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
Stopping a Fluent batch job AND saving the data! Possible? Volker Pawlik FLUENT 7 May 22, 2014 22:30
Two questions on Fluent UDF Steven Fluent UDF and Scheme Programming 4 September 20, 2013 16:30
Error in reading Fluent 13 case file in fluent 12 apurv FLUENT 2 July 12, 2013 07:46
Fluent 6.3 32bit vs Fluent 12.0 64bit ibex7 FLUENT 7 April 18, 2011 02:44
FFT on FLUENT Lourival FLUENT 2 August 18, 2007 16:56

All times are GMT -4. The time now is 22:17.