CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

Grid resolution for an airfoil with a Gurney flap

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

LinkBack Thread Tools Display Modes
Old   October 24, 2009, 07:22
Default Grid resolution for an airfoil with a Gurney flap
Senior Member
Join Date: Jun 2009
Posts: 100
Rep Power: 10
alastormoody11 is on a distinguished road

I am simulating a 2D airfoil with a Gurney flap(which is a thin flap, extending on the suction side attached to the trailing edge perpendicular to the camber). I am using a quasi steady approach and using the K-E(k- epsilon) turbulence model with a standard wall function. Now for an airfoil with a Gurney flap 2 counter rotating vortices are set up behind the airfoil and one more vortex is set up between the flap and the suction side. The problem is that for resolving these three vortices a very fine mesh is required due to which the wall y plus values in this region drop well below the recommended value(30 for standard wall fn and 5 for enhanced wall treatment) Is the use of the turbulence model still justified since I want the Cl(coefficient of lift) from this simulation or is there any other way out?
alastormoody11 is offline   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
Large difference in grid resolution for diff paper Ben Main CFD Forum 16 April 7, 2007 11:45
On grid independent solution for pulsatile flow David FLUENT 4 June 8, 2005 16:20
Meshing An airfoil with a simple plain flap S. Kalam FLUENT 7 January 30, 2005 21:22
Combustion Convergence problems Art Stretton Phoenics 5 April 2, 2002 05:59
Grid Independent Solution Chuck Leakeas Main CFD Forum 2 May 26, 2000 11:18

All times are GMT -4. The time now is 21:56.