CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > ANSYS Meshing & Geometry

[Other] 3d high lift meshing

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 6, 2013, 12:47
Default 3d high lift meshing
  #1
Member
 
Linyx
Join Date: Mar 2011
Posts: 31
Rep Power: 15
linyx is on a distinguished road
Hey guys, I have a problem that troubles me several days, about 3d high lift wings meshings. I have a question about its meshing strategy

the wing tip is a blunt, flat plate tip. I first mesh the wing root using the boundary layer mesh around the slat,wing,and flap, the first grid height is very low(10e-6chord), and then use the tri mesh to fill other 2d aera. To generate the 3d mesh, I translate this 2d meshing to the wing tip. the wing tip is then meshed by tri mesh, at last, the translated mesh and wing tip mesh are translated again, to a far field,(like cooper in gambit)

but when i take them into the fluent, then calculation seems not to converge. the continuity residuals is 10e2, the velocity and pressure are not physics

But when I take away that boundary layer mesh, the solution then converged!but I can not ensure the first grid Y+,which is easy to control for boundary layers.

So what wrong with my previous mesh? the skewness is Ok, just the aspect ratio is a bit large(which is plausible) after checking, does it have anything to do with the wing tip aera where the wing tip mesh is so large compared to the inner boundary layer mesh, or else? Any other meshing strategy available?

If you have any idea after reading, please leave your thought, Thank you!

ps: I am using the Pointwise meshing tool
linyx is offline   Reply With Quote

Old   April 7, 2013, 04:36
Default
  #2
Far
Senior Member
 
Sijal
Join Date: Mar 2009
Location: Islamabad
Posts: 4,558
Blog Entries: 6
Rep Power: 54
Far has a spectacular aura aboutFar has a spectacular aura about
Send a message via Skype™ to Far
There is already a tutorial (sort of) on the similar geometry on this forum with full hexa mesh in ICEM.
Far is offline   Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[ICEM] Flow channel meshing problems StefanG ANSYS Meshing & Geometry 19 May 15, 2012 07:44
[ANSYS Meshing] Meshing strategy for External Flows Hybrid ANSYS Meshing & Geometry 0 January 24, 2012 15:27
[GAMBIT] High lift configuration airplane model wake ANSYS Meshing & Geometry 0 December 4, 2009 05:15
high lift devices at low reynolds Pablo Cornejo FLUENT 0 June 28, 2005 22:35
Singularity of grid?Volume meshing vs face meshing Ken Main CFD Forum 0 September 4, 2003 12:09


All times are GMT -4. The time now is 12:32.