CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Main CFD Forum

The size of the computational domain

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 19, 2004, 11:42
Default The size of the computational domain
  #1
CFD Rookie
Guest
 
Posts: n/a
Hello everyone,

I have a quick question here. I am trying to model a full size airplane (half an airplane: cut along the X-Z plane). What is the probable size of my overall computational domain. Should I use the airplane overall fuselage length as my reference or the wing geometric chord (c_bar) as my reference length or something else? In terms of upstream, downstream, lateral side, upper and lower boundary, how far is far enough?

Thanks in advance.

  Reply With Quote

Old   March 19, 2004, 12:36
Default Re: The size of the computational domain
  #2
Jarmo Monttinen
Guest
 
Posts: n/a
What is your Reynolds number etc? I don't have the fuselage in my computations so I've use the wing max chord and the wing span. Upstream, upper and lower about 5*chord, downstream about 10*chord, the side depends more on the Re, the wing span, etc... I have used about 3*span but have a LAR wing so for a higher AR wing that would be an overkill. I started with a slightly smaller domain and increased to these, further increase did not change the results.

I hope this helps.

-- Jarmo
  Reply With Quote

Old   March 21, 2004, 10:23
Default Re: The size of the computational domain
  #3
versi
Guest
 
Posts: n/a
Supersonic -> upstream BC can be nearer. Subsonic -> upstream 1-2 full plane length Lateral: based on win-span. Anyway, there are lot Refs. for you.
  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
Domain Imbalance HMR CFX 3 March 6, 2011 21:10
OF 1.6 | Ubuntu 9.10 (64bit) | GLIBCXX_3.4.11 not found piprus OpenFOAM Installation 22 February 25, 2010 14:43
Optimum Size of Rotating Domain in MRF vismech STAR-CCM+ 1 September 9, 2009 17:51
computational domain & boundary condition novice Main CFD Forum 0 May 8, 2006 19:30
Combustion Convergence problems Art Stretton Phoenics 5 April 2, 2002 05:59


All times are GMT -4. The time now is 05:17.