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

Torque calculation with fluent

Register Blogs Community New Posts Updated Threads Search

Like Tree1Likes
  • 1 Post By mAx

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 21, 2008, 05:30
Default Torque calculation with fluent
  #1
s wang
Guest
 
Posts: n/a
Hello all,

I am currently implementing Fluent to simulate the wind turbine.I want to calculate the torque generated by the blades.Could anyone pls give me some advice on the calculating of torque?

Advanced thanks.

S.Wang
  Reply With Quote

Old   October 21, 2008, 05:47
Default Re: Torque calculation with fluent
  #2
sushil
Guest
 
Posts: n/a
Hi Wang,

I am also trying to simulate the wind turbine. could you please tell me what boundary conditions you are using and whether you are simulating with dynamic mesh or with Axi-symmetric boundary conditions?

Please help.

Thanks in advance.

Regards, Sushil.

  Reply With Quote

Old   October 21, 2008, 05:55
Default Re: Torque calculation with fluent
  #3
mAx
Guest
 
Posts: n/a
report/forces here you can compute moments on your blades
  Reply With Quote

Old   October 21, 2008, 05:59
Default Re: Torque calculation with fluent
  #4
s wang
Guest
 
Posts: n/a
Hi Sushil,

Thanks for your email. Actually, my interests focus on the Vertical axis wind turbine. I guess you are talking on the Horizontal axis wind turbine, right? In my opinion, we could use the moving mesh or moving reference frame instead of dynamic mesh.

Cheers,

Wang
  Reply With Quote

Old   October 21, 2008, 06:03
Default Re: Torque calculation with fluent
  #5
s wang
Guest
 
Posts: n/a
Dear mAx,

Thank you for your email.

Yes, I could use the menu you mentioned to calculate torque. However, what if my simulation is unsteady and needs to calculate the moment with time?

Regards,

Wang
  Reply With Quote

Old   October 21, 2008, 06:32
Default Re: Torque calculation with fluent
  #6
mAx
Guest
 
Posts: n/a
then you can write your torque in a file at each time step check the box "Write...", then you need a udf for writing your results at each time step. perhaps, there is another way, but this one works

libyano likes this.
  Reply With Quote

Old   October 21, 2008, 06:34
Default Re: Torque calculation with fluent
  #7
s wang
Guest
 
Posts: n/a
Dear mAx,

Thanks for your reply. I will try your advice.

Best regards,

Shengyi Wang
  Reply With Quote

Old   October 22, 2008, 01:07
Default Re: Torque calculation with fluent
  #8
sushil
Guest
 
Posts: n/a
Hi Wang,

Thanks for the inputs. Yes I am working on horizontal axis turbine. What BC's you are using..?

Have a nice time.

Regards, Sushil.
  Reply With Quote

Old   October 22, 2008, 08:34
Default Re: Torque calculation with fluent
  #9
s wang
Guest
 
Posts: n/a
Hi Sushil,

In my case, I prefer the pressure-far-field as the inlet BC. By the way, I am not performing the 2D simulations and my domain is a parabola.

Pls give some advice if possible.

cheers,

Shengyi, Wang

Leeds

  Reply With Quote

Old   October 22, 2008, 08:37
Default Re: Torque calculation with fluent
  #10
s wang
Guest
 
Posts: n/a
Sorry, there is a mistake in the above message.

It should be 'I am now performing a 2D simulation.', not 'I am not...'

Regards, Shengyi
  Reply With Quote

Old   January 14, 2013, 10:37
Default how to calclutate torue in fluent
  #11
New Member
 
bhushan patil
Join Date: May 2012
Posts: 19
Rep Power: 14
p.bhushan2727@gmail.com is on a distinguished road
dear frnds plz tell me hoe to calculate torque in fluent i am working on vertical axis wind trubine h shaped daarruis type so for that concern ia m doing 2d simulations unsteday for that i am giving cl ,cd cm moniters on blades so will plz tell me how to find out direct torque in flunt or how to co relate it 2 moment ia m aatching paper and some images of my mesh so it will clear u piture of problem
plz tell me it needs udf to find torue on blades
Attached Images
File Type: jpg outer domin with main mesh.jpg (98.1 KB, 78 views)
File Type: jpg main mesh.jpg (97.3 KB, 70 views)
File Type: jpg inner circle in outer domain.jpg (50.9 KB, 65 views)
File Type: jpg inner circle with blades.jpg (83.6 KB, 66 views)
File Type: jpg outer domin without inner circle.jpg (98.3 KB, 58 views)
p.bhushan2727@gmail.com is offline   Reply With Quote

Old   February 9, 2017, 10:45
Default
  #12
New Member
 
Jose Carlos
Join Date: May 2013
Posts: 6
Rep Power: 13
jotac is on a distinguished road
Quote:
Originally Posted by mAx
;154187
then you can write your torque in a file at each time step check the box "Write...", then you need a udf for writing your results at each time step. perhaps, there is another way, but this one works
Hi, would you have this UDF and if yes, could you share it?

Thanks,
Jota
jotac is offline   Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
torque calculation Mac Siemens 3 December 11, 2007 23:13
Torque calculation in pumping equipment Kirill Main CFD Forum 0 June 26, 2007 17:59
torque calculation sudhakar CFX 15 January 5, 2006 10:08
torque calculation Galeazzo FLUENT 2 July 1, 2004 12:32
torque calculation baned FLUENT 1 August 29, 2003 13:53


All times are GMT -4. The time now is 16:13.