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

Meshing airfoil

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 19, 2000, 08:51
Default Meshing airfoil
  #1
Wason
Guest
 
Posts: n/a
Hi,Dear All

I am using FLUENT5 to simulate the unsteady flow of 2D airfoil & 3DWing,but I meet a problem when I model 2D airfoil mesh, I don't know how to control the mesh density near the wall by using structure mesh(quad Map method). Is it possible for Gambit to model structure mesh? and How? I don't know why I could not transfer boundary layer generated by Gambit to Fluent 5? Is there any technique?

Thank you in advance! If it is possilbe, Please give me a copy via email when you responce. Thanks

  Reply With Quote

Old   April 19, 2000, 21:33
Default Re: Meshing airfoil
  #2
yin jaafar
Guest
 
Posts: n/a
hi! if i'm not mistaken, fluent 5 only accepts unstructured mesh, but then, check again.
  Reply With Quote

Old   April 19, 2000, 22:06
Default Re: Meshing airfoil
  #3
Wason
Guest
 
Posts: n/a
Thanks for your response, Gambit can creat a mapped mesh. and it can be transfered to Fluent5. But I don't know how to generate a suitable mesh around airfoil, especially near the wall. I have tried to divide the computational domain into three blocks, and then mesh them resepectively with quad map method.The edges except airfoil wall and far wall were set as interior boundary condition ,However, when I use this mesh in Fluent5 to solve (Mach=0.6/AOA=0) a problem, I could not get a resonable result(Vmax exceed 400m/s), was wrong with me?

Thanks Wason
  Reply With Quote

Old   April 25, 2000, 21:01
Default Re: Meshing airfoil
  #4
Balaji Vasudevan
Guest
 
Posts: n/a
I think that you can create boundary layers attached to the aerofoil wall and extending to a suitable distance. This will take care of the mesh density near the wall.

- Balaji
  Reply With Quote

Old   April 25, 2000, 21:48
Default Re: Meshing airfoil
  #5
Wason
Guest
 
Posts: n/a
Thank you for your response, Yes, I have tried to create boundary layers attached to the aerofoil wall and extending to a suitable distance. But I don't know why I couldn't transfer the boundary layer mesh from Gambit(Version1.1) to Fluent,It only leaves the normality mesh. Could you tell me the process of meshing a airfoil with boundary layer?

Thanks a lot!

Wason
  Reply With Quote

Old   April 26, 2000, 16:05
Default Re: Meshing airfoil
  #6
Aaron J. Bird
Guest
 
Posts: n/a
I believe that the important things to keep in mind are the direction of your boundary layer, the depth, and the growth factor. The direction and depth you will know from working with the problem and having a feel for the grid resolution necessary to capture the boundary layer. The growth factor should not exceed 15%... like something between 1.01 and 1.15. You probably already know this, but you must mesh the boundary layer first before the rest of the mesh.

  Reply With Quote

Old   November 8, 2009, 12:50
Default
  #7
New Member
 
Fariborz Soroush
Join Date: Oct 2009
Location: Tehran, Iran
Posts: 14
Rep Power: 7
faudiS8 is on a distinguished road
hi all
thanks for your attention
I wanna to create a structured grid around an slotte flp section with the limitation of 10000elements and the angle of flap of45 degrees. so I wanna know what's your idea?(also I work with Gambit)
My initial idea is to connect to parts together then mesh around like an airfoil then mesh inside .....no idea again generated till know!(I'm sleeepy!)
faudiS8 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
Airfoil Meshing Scheme in Gambit J. Weiler FLUENT 6 October 2, 2011 15:41
[Other] Ansys meshing airfoil and / or compressor blades baw192 ANSYS Meshing & Geometry 8 September 23, 2011 00:43
Gambit - meshing over airfoil wrapping (?) problem JFDC FLUENT 1 July 11, 2011 05:59
Oscillating Airfoil - Dynamic meshing or user-defined velocity profile. DarrenC Main CFD Forum 5 July 19, 2010 22:33
[GAMBIT] Meshing airfoil using .dat file problem creggie ANSYS Meshing & Geometry 10 June 27, 2010 19:24


All times are GMT -4. The time now is 01:54.