|August 20, 2009, 07:11||
wind tunnel results vs fluent
Join Date: Jul 2009
Location: Sydney, Australia
Posts: 9Rep Power: 9
I was just wondering, I am comparing my Fluent results for a c=1 airfoil, to sum wind tunnel tests. the grid I have is a typical C-H grid and mesh with pressure far field boundary conditions (all boundaries). the error i get is 20% for Cd (even though my y+ is too high) and with a refined grid it gets an error of 8% - pretty good!
My question is, the grid size i've been using is not very representative of the wind tunnel dimensions, nor the boundary conditions or the chord length of my airfoil (wind tunnel test uses an airfoil of c=0.3m)
Can I compare my results to the wind tunnel test results and say they're good, even though nothing of my simulations (except the results) is representative of the wind tunnel?
hmmmm...but my results are pretty good! would appreciate comments.
Thanx in advance
|August 20, 2009, 08:02||
Join Date: Mar 2009
Posts: 55Rep Power: 10
I would say if your non-dimenional parameter are similar, ie same chord based Reynolds number etc, then you can say the two flow are similar and hence the results would be the same.
|Thread||Thread Starter||Forum||Replies||Last Post|
|CFD v.s wind tunnel in airfoil||FRED CHEN||CFX||0||July 12, 2005 02:59|
|CFD in wind tunnel||Anders Hagberg||Main CFD Forum||9||June 1, 2004 17:42|
|CFD versus Wind Tunnel Test||wuttichai||Main CFD Forum||3||November 12, 2003 01:07|
|Wind tunnel simutalion in Rampant||Md. Shahiduzzaman Khan||Main CFD Forum||6||February 18, 1999 14:15|
|wind tunnel correction||Arthur Chen||Main CFD Forum||2||September 4, 1998 18:42|