Forces and Plane of Symmetry

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 February 7, 2005, 16:31 Forces and Plane of Symmetry #1 Riaan Guest   Posts: n/a Hello everyone, I have a question as to the force reports of Fluent when I use the plane of symmetry. I have a wing, which is cut along its centerline by a plane of symmetry. When I do a force report, will Fluent give me the force over the whole wing (ie. both sides), or only the half I have in the flowfield?

 February 7, 2005, 16:35 Re: Forces and Plane of Symmetry #2 Riaan Guest   Posts: n/a Sorry, I did a search on the forums and found that it will only report the force on half the body. Can I get someone to verify this ?

 February 7, 2005, 18:20 Re: Forces and Plane of Symmetry #3 Jason Guest   Posts: n/a That's correct, FLUENT only gives you the forces of what is present in the mesh(so only half the model when using symmetry BC). It's typical to deal with coefficients from the force report. If you use half of the reference area, this will give you the correct coefficients. (Coefficient = Force/(.5*Q*Aref), so since Fluent is reporting half of the force, using half of the area as your Aref gives you the full model coefficient). Hope this helps, and goodluck, Jason

 February 8, 2005, 05:02 Re: Forces and Plane of Symmetry #4 Charles Guest   Posts: n/a Riaan, as you guessed, it will be half body forces only, so make sure that you use half reference areas if you want coefficients. Just a word of warning (although it's probably not relevant for your problem), if you need lateral forces on a half body, you have to make sure that you use relative pressures, not absolute ....

 Thread Tools Search this Thread Search this Thread: Advanced Search Display Modes Linear Mode

 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 OffTrackbacks are Off Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Will Anderson FLUENT 0 November 6, 2010 17:08 Matt CFX 2 February 25, 2009 05:41 Roland CFX 7 May 31, 2006 13:34 StudentAndrew CFX 1 November 1, 2005 08:54 Rob FLUENT 1 July 16, 2002 04:55

All times are GMT -4. The time now is 01:31.

 Contact Us - CFD Online - Privacy Statement - Top