CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Meshing & Mesh Conversion

[snappyHexMesh] Problem with curves and layers

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

LinkBack Thread Tools Search this Thread Display Modes
Old   January 15, 2019, 06:47
Default Problem with curves and layers
New Member
Tim Völcker
Join Date: Oct 2018
Posts: 1
Rep Power: 0
Ouschen is on a distinguished road
Dear OpenFoam users,

i'm currently setting up a file with an airfoil in 2D. I'm quite new to OpenFoam and i've been looking for a solution for over a week. I have Problems to get the right Geometry at the tip of the airfoil. I attached the tip of the the stl-file and the tip after the snappyHexMesh run. I already tried to refine the stl-file and changed a lot parameters in sHM, but no success. Another Problem i'm facing is that i need a y+-value below 5. I'm currently between 2-7 with 3 layers. When i want to lower the value of the layers sHM doesn't give me any layers at all and i have no clue why. Thanks for any help.

Best wishes,

Attached Images
File Type: png end_of_airfoil.png (9.4 KB, 26 views)
File Type: png stl.png (6.1 KB, 20 views)
Attached Files
File Type: zip (3.3 KB, 0 views)
Ouschen is offline   Reply With Quote

Old   January 24, 2019, 08:49
Senior Member
Join Date: Jan 2016
Posts: 416
Rep Power: 14
simrego is on a distinguished road

Try to increase the refinement level at the tip. Your mesh is too coarse there.
If you increase the refinement level with one, your y+ will be the half of the current value.
But you will need more refinement at the tip. You can't follow these small features with big elements.

Layer addition with snappy is not easy. Especially with a curved surface and many layers, there are many suggestions about it in the forum.
simrego is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
[ICEM] unstructured 2d airfoil mesh Mazur ANSYS Meshing & Geometry 21 June 7, 2023 03:48
[ICEM] width in curve meshing sadjad.s ANSYS Meshing & Geometry 5 June 25, 2013 14:09
[ICEM] Prism mesh problems camilo_costa ANSYS Meshing & Geometry 6 February 9, 2010 08:57
ICEMCFD creates irregular surface layers ? ingear CFX 1 April 10, 2006 14:37

All times are GMT -4. The time now is 03:28.