CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Native Meshers: snappyHexMesh and Others

Add additional boundary layers to complex stl surface

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 25, 2011, 05:53
Default Add additional boundary layers to complex stl surface
  #1
New Member
 
Join Date: Aug 2011
Posts: 2
Rep Power: 0
tobijingles is on a distinguished road
Hello Everyone!

I want to generate a grid for simulating flow over a complex surface. I have generated an stl file containing the surface with matlab from point data. The stl file also contains a kind of "box" surface around the ground surface and a top surface, to be able to select the cells to be kept after snapping to surface. (Because the cells must be surrounded by a closed surface.)

This works quite well and I have a first grid now. When viewing the grid I saw many cells near the surface with strange geometry, so I want to use the addLayers feature.

I'm new to OpenFoam, and I don't understand what is meant by "The patch name is used because the layers addition relates to the
existing mesh, not the surface geometry; hence applied to a patch, not a surface region." in the user guide.

How do I get the patch name? I looked at the tutorials (flange and motorbike), but the entries there are not making it clearer to me.

Is there a possibility to add layers to the stl surface?

Do I need to store the surface and the box-walls surounding it in different "solids" in the stl file?

I'm looking forward for your help, don't hesitate to ask for more information if the problem is not clear at all!

Tobias
tobijingles is offline   Reply With Quote

Old   October 26, 2011, 10:45
Default
  #2
Member
 
Join Date: Sep 2011
Posts: 45
Rep Power: 5
ic3wall is on a distinguished road
did you figure out your problem ?

I was wondering the same thing..
ic3wall is offline   Reply With Quote

Reply

Tags
addlayers, layers, patch, snappyhexmesh

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
[ICEM] Problems with coedge curves and surfaces tommymoose ANSYS Meshing & Geometry 0 August 5, 2011 16:02
Replace periodic by inlet-outlet pair lego CFX 3 November 5, 2002 21:09
Two boundary conditions on the same surface! varghese FLUENT 2 May 28, 2002 03:41
Gambit 2 Boundary Layers An Modh Coinniolach FLUENT 2 January 30, 2002 12:54
CFX4.3 -build analysis form Chie Min CFX 5 July 12, 2001 23:19


All times are GMT -4. The time now is 21:46.