CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > Phoenics

total lift

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

LinkBack Thread Tools Display Modes
Old   June 27, 2002, 19:48
Default total lift
Posts: n/a
Does anyone know how can i calculate the DRUG COEFFICIENT and the LIFT COEFFICIENT from a wing?

thanks a lot
  Reply With Quote

Old   July 17, 2002, 05:12
Default Re: total lift
Michael Malin
Posts: n/a
Calculation of forces on bodies is not something that is currently available as a built-in PHOENICS option, but we are hoping to introduce it in the future. There is an unofficial GROUND module that is available to maintained PHOENICS users. However, it would not be too difficult for you to introduce it in the form of GROUND coding: basically just integrating pressure multiplied by area in the appropriate normal direction, and adding up the frictional sources (also taking notice of the direction).
  Reply With Quote

Old   July 17, 2002, 08:13
Default To Dr. Malin on Nu
H. Chattopadhyay
Posts: n/a
Dear Dr. Malin:

I have earlier requested about generating Nuseelt number form solution. Can you please suggest whether GROUND modules for Nu is avaialble with you. This would really help us.

  Reply With Quote

Old   July 17, 2002, 08:35
Default Re: To Dr. Malin on Nu
Michael Malin
Posts: n/a
I am not sure when and where you made such a request, and so I cannot address your particular problem without more information. I do know that there have been several requests from maintained users for Nusselt number coding from our support team. We have supplied such coding to them, but the coding depends on the flow configuration, and the precise definition of the Nusselt number ( which the user must specify ).

For PHOENICS V3.4, you can put STORE(HTCO) in the Q1 file and this will provide values of the LOCAL heat transfer coefficient in the relevant cells. HTCO can then be used to formulate the LOCAL Nusselt number in GROUND by scaling with the appropriate length scale. The "Engineering" Nusselt can be always be determined by scaling the local Nusselt number with the reference length scale and temperature difference.
  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
Lift force or coefficient of lift Rola FLUENT 1 November 12, 2006 14:29
Total run time Dominic Main CFD Forum 0 August 24, 2006 23:12
Total heat transf. rate vs Total surface heat flux Renato Sousa FLUENT 0 August 22, 2005 10:34
STATIC or TOTAL? jim Phoenics 4 August 21, 2005 05:17
Total volume UDF Alexandre FLUENT 1 July 18, 2002 14:32

All times are GMT -4. The time now is 09:00.