CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Calculating Performance Coefficient (Cp) in Fluent

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

Like Tree1Likes
  • 1 Post By aptahaney

LinkBack Thread Tools Display Modes
Old   July 29, 2015, 16:02
Default Calculating Power Coefficient (Cp) in Fluent
New Member
Join Date: Jun 2015
Posts: 16
Rep Power: 2
aptahaney is on a distinguished road
Hi everyone,
I just want to verify if I am doing something correctly here and I'm not way off in my understanding.....

To work out the Power Coefficient (Cp) of a VAWT in Fluent:

I have worked out the time taken for each degree of rotation, so I will set my time step equal to the time taken for 1 revolution, and 360 iterations per time step.
I then use the Monitors section of Fluent to show the Moment for each degree.
After obtaining 360 values, I copy and paste the data into excel and to calculate the performance coefficient, I use the formula
Cp=lambda * C_T
where lambda is the tip-speed ratio.
(I got this formula from this paper: http://www.technicaljournalsonline.c...ticle%2022.pdf)

And then I work out the Cp value for each of the 360 value and then get the overall average to get my final Cp figure.

Am I correct in my understanding that "Moment" in Fluent is actually C_T in the above formula? And am I correct in my understanding of how to calculate Cp.

Thanks for your assistance.
djawad likes this.

Last edited by aptahaney; August 1, 2015 at 09:00. Reason: typo.
aptahaney is offline   Reply With Quote

Old   September 5, 2015, 19:22
New Member
Join Date: Jan 2012
Posts: 21
Rep Power: 4
abuabdellah.albatal is an unknown quantity at this point
are you there buddy?
abuabdellah.albatal 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
looking for a smart interface matlab fluent chary FLUENT 8 July 2, 2014 07:14
heat transfer coefficient in fluent tintin FLUENT 0 June 30, 2014 05:49
The fluent stopped and errors with "Emergency: received SIGHUP signal" yuyuxuan FLUENT 0 December 3, 2013 23:56
Problem in using parallel process in fluent 14 Tleja FLUENT 3 September 13, 2013 10:54
Calculating Cell Sizes Using FLUENT Macros bryankelly Fluent UDF and Scheme Programming 1 October 9, 2012 00:11

All times are GMT -4. The time now is 22:09.