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

Internal Zero-thick curved plate: correcting faces orientation

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

LinkBack Thread Tools Display Modes
Old   July 3, 2013, 08:52
Default Internal Zero-thick curved plate: correcting faces orientation
Join Date: Jul 2012
Posts: 66
Rep Power: 7
hfs is on a distinguished road
Hello Foamers!

My target is to estimate wind pressure on a curved plate (Attached: "Geo.png"). I am interested in pressure distribution on both sides (facing/nonfacing the wind).

The approach I used to prepare the mesh is by using snappyHexMesh, in which it creates a faceZone out of the STL file, then applying createBaffles command to have 2 patches that have the same faces of the faceZone with inverted orientation.

The problem is: each patch has a mix of faces that facing or not facing the wind direction (This can be demonstrated by plotting pressure distribution on one patch as shown in the attached pics "p.png", "p_with_slice.png")... i.e. I need to correct faces' normals such that: each patch should have all of its faces facing one direction.

How can we orient or flip faces' normals? .. can this be done before/after meshing?

Thank you very much for your time and advice.

PS: This problem did not arise when we tried this procedure for a plane plate (not curved) (Please see attached pressure diagrams: "Plane_Plate.frontPatch", "Plane_Plate.backPatch")
Attached Images
File Type: jpg Geo.jpg (21.1 KB, 24 views)
File Type: jpg p.jpg (32.5 KB, 29 views)
File Type: jpg p_with_slice.jpg (23.9 KB, 27 views)
File Type: jpg Plane_Plate_frontPatch.jpg (15.3 KB, 27 views)
File Type: jpg Plane_Plate_backPatch.jpg (15.4 KB, 27 views)
hfs is offline   Reply With Quote

Old   September 13, 2013, 12:46
Ripudaman Manchanda
Join Date: May 2013
Posts: 52
Rep Power: 6
ripudaman is on a distinguished road
I am very interested in the problem you are trying to solve. I wish to see the plane surface as two boundaries as well. I am trying to apply this to create a static hydraulic fracture.

Can you please send me the files and the procedure you used to create the rectangular plate case that worked?
Did you use SHM?

Eventually I would like to be able to figure out a solution to the curved boundary issue that you are facing. But I think the plate boundary will be a good starting point for me.

Thanks in advance!
ripudaman 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
[Other] Mesh Importing Problem cuteapathy ANSYS Meshing & Geometry 2 June 24, 2017 05:29
fluentMeshToFoam multidomain mesh conversion problem Attesz OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 12 May 2, 2013 10:52
BlockMeshmergePatchPairs hjasak OpenFOAM Native Meshers: blockMesh 11 August 15, 2008 07:36
boundary conditions for internal faces Tom Pendrey FLUENT 1 March 5, 2007 19:25
Boundary Condition of internal Faces Gernot FLUENT 5 August 26, 2005 13:02

All times are GMT -4. The time now is 00:16.