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

6DOF moving F1 Wing

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 31, 2012, 06:14
Default 6DOF moving F1 Wing
  #1
Member
 
David
Join Date: Aug 2012
Posts: 36
Rep Power: 3
GM_XIII is on a distinguished road
I'm trying to simulate the downforce of an f1 wing which is moving inside the fluid. I dont know how to set the wing motion, i've created a 6DOF Body and constraint its motion to the z Axis and as I dont know how to give it a certain motion I've tried to give it a force that produces that motion. Is there a easier way? I suppose so, thank you in advance.

pd: I've read the manual and specially the example of the boat but the boat moves becouse of the water and not becouse a fixed motion.
GM_XIII is offline   Reply With Quote

Old   September 5, 2012, 05:38
Default
  #2
Member
 
Henry Arrigo
Join Date: Jun 2010
Location: Italy
Posts: 85
Rep Power: 6
Henry Arrigo is on a distinguished road
I think you can use Mesh morphing or overset grid to give the wing a specific moyion.
Henry Arrigo is offline   Reply With Quote

Old   September 5, 2012, 12:09
Default
  #3
Member
 
David
Join Date: Aug 2012
Posts: 36
Rep Power: 3
GM_XIII is on a distinguished road
Very thank you. And how can i know if the movement is correct? how can i plot it? is there a report?
GM_XIII is offline   Reply With Quote

Old   September 6, 2012, 00:59
Default
  #4
Member
 
Henry Arrigo
Join Date: Jun 2010
Location: Italy
Posts: 85
Rep Power: 6
Henry Arrigo is on a distinguished road
Use either max or min function to extract x/or y/or z_max/ or min point of the wing. then plot the position of this point.
Henry Arrigo is offline   Reply With Quote

Old   September 6, 2012, 11:05
Default
  #5
Member
 
David
Join Date: Aug 2012
Posts: 36
Rep Power: 3
GM_XIII is on a distinguished road
Very thank you mate. I will try it right now and give you news. Really, you helped me a lot.
GM_XIII is offline   Reply With Quote

Old   September 6, 2012, 15:17
Default
  #6
Senior Member
 
Join Date: Oct 2009
Location: Germany
Posts: 637
Rep Power: 11
abdul099 is on a distinguished road
Are you sure, you need a 6DOF motion?

Usually the motion is driven by the motion of the car, not by fluid forces, therefore I would just apply an inlet velocity and a moving ground boundary instead of using 6DOF (which is definitely the wrong model as soon as the wing can't move according to fluid forces).
__________________
We do three types of jobs here:
GOOD, FAST AND CHEAP
You may choose any two!
abdul099 is offline   Reply With Quote

Old   September 6, 2012, 15:49
Default
  #7
Member
 
David
Join Date: Aug 2012
Posts: 36
Rep Power: 3
GM_XIII is on a distinguished road
yes, you are right i handled to do it making some tricks but now i am trying to use the Morpher as Henry Arrigo said but I'm having problems becouse the wing does not follow the position i gave it, the amplitude is different, ideas? Thank you all.

pd: I dont know what you refer with moving ground boundary, as I know if i dont set the Morpher i only can give it velocity but not displacement. I will explain again what i want to do, i want to simulate a moving wing (with a prefixed movement) while it is in a moving fluid.
GM_XIII is offline   Reply With Quote

Old   September 8, 2012, 01:44
Default
  #8
Member
 
Henry Arrigo
Join Date: Jun 2010
Location: Italy
Posts: 85
Rep Power: 6
Henry Arrigo is on a distinguished road
I v had such a problem, unfortunately i could not find any answer. i think i this regard ansys-cfx works better. i d be glad if you can find a way to overcome this issue in ctar-ccm+, because i left my problem unsolved.
Here is the link of my discussion:

Wedge and morpher
Henry Arrigo is offline   Reply With Quote

Old   September 8, 2012, 06:07
Default
  #9
Member
 
David
Join Date: Aug 2012
Posts: 36
Rep Power: 3
GM_XIII is on a distinguished road
Finally It was solved by using the rigid body motion and gave to it a prefixed velocity, i'll take a look at the morpher and try to discover why but it is weird. Very thank you to all of you that helped in this topic.
GM_XIII 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
[ICEM] Blocking For Swept Wing air_engineer_arsenal ANSYS Meshing & Geometry 13 July 24, 2012 11:52
How to set up a dynamic mesh for a piston moving through a tube of variable diameter? karkar OpenFOAM Meshing & Mesh Conversion 0 July 4, 2012 06:54
Flapping wing by moving frame loogtaan FLUENT 1 October 11, 2007 02:48
Segmentation Fault moving wing lr103476 OpenFOAM Running, Solving & CFD 5 May 4, 2006 06:51
External Aerodynamics - Moving Wing Mick FLUENT 0 October 3, 2005 08:13


All times are GMT -4. The time now is 16:48.