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March 6, 2006, 11:40 |
Hi everybody,
I hope that s
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#1 |
Member
Rosario Russo
Join Date: Mar 2009
Location: Trieste, Italy
Posts: 56
Rep Power: 17 |
Hi everybody,
I hope that somebody could help to cope with this problem... I need to export a patch mesh from a OpenFoam case. I'd like to have the mesh points of the patch, the surface area of the patch faces and the connectivity. I'm writing some code which performs the task and it would be nice to expolit the tools in the OpenFoam library. So far I tried to use fvMesh. I can get the faces centre of the mesh patch and the faces area vectors but I am not able to get the patch points positions; Then I tried to use polyMesh and pointMesh classes, in this way I can get the points of the patch mesh but not the connectivity of them i.e. the patch faces; Finally I tried using faMesh class but I'm not able to select only the patch mesh I'm interested in. BTW I saw also a class called boundaryMesh which maybe fits my needs but I don't know how to construct an object... Thank you for any hint. |
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March 6, 2006, 12:47 |
Hi,
if you read in a mesh w
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#2 |
Senior Member
Markus Hartinger
Join Date: Mar 2009
Posts: 102
Rep Power: 17 |
Hi,
if you read in a mesh with # include "createMesh.H" it will give you a fvMesh, which is derived from polyMesh and surfaceInterpolation. You can access all public member functions from which fvMesh is derived. Have a look at the Programmers C++ doxygen. So, fvMesh contains all mesh information markus |
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March 6, 2006, 12:52 |
Get the patch from polyMesh:
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#3 |
Senior Member
Hrvoje Jasak
Join Date: Mar 2009
Location: London, England
Posts: 1,906
Rep Power: 33 |
Get the patch from polyMesh:
const polyPatch& p mesh.boundaryMesh()[patchI]; You can now get the local points, faces etc directly - have a look at the PrimitivePatch.H OpenFOAM-1.2/src/OpenFOAM/meshes/PrimitivePatch/PrimitivePatch.H So, for local points use: //- Return pointField of points in patch const pointField& localPoints() const; For faces in terms of local points use: //- Return patch faces addressing into local point list const List<face>& localFaces() const; and you've got all the associated connectivity and addressing there as well. Enjoy, Hrv
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Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk |
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March 7, 2006, 05:41 |
Thank you Hrvoje.
Your sugg
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#4 |
Member
Rosario Russo
Join Date: Mar 2009
Location: Trieste, Italy
Posts: 56
Rep Power: 17 |
Thank you Hrvoje.
Your suggestion was very precious to me. I would never have found out that way by myself. In the Doxygen documentation I didn't find any link between polyMesh and polyPatch and it seemed to me the function boundaryMesh in polyMesh could only construct object of polyBoundaryMesh class. The only drawback is that deeper I look, and deeper I have to look... :-) Thanks again. |
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