[Other] Viewing meshes

terrybarnaby · May 27, 2009, 06:13

Hi,
I am trying to look at the mesh generated by snappyHexMesh in an effort to improve the mesh quality. Has anyone any suggestions on the best way to view the mesh for this purpose ?
At the moment I am using paraview 3.4. I generate a slice for viewing the mesh around my object in 2D. I currently have a simple, unrefined, cube based mesh. With this paraview displays the set of 2D squares in a grid but adds diagonals to each square. This makes it difficult to view what the mesh actually is especially when I start refining it with snappyHexMesh. Or am I doing something wrong with Paraview ?

gschaider · May 28, 2009, 11:11

Quote:

Originally Posted by terrybarnaby

Hi,
I am trying to look at the mesh generated by snappyHexMesh in an effort to improve the mesh quality. Has anyone any suggestions on the best way to view the mesh for this purpose ?
At the moment I am using paraview 3.4. I generate a slice for viewing the mesh around my object in 2D. I currently have a simple, unrefined, cube based mesh. With this paraview displays the set of 2D squares in a grid but adds diagonals to each square. This makes it difficult to view what the mesh actually is especially when I start refining it with snappyHexMesh. Or am I doing something wrong with Paraview ?

There's nothing wrong. As I understand it most algorithms in Paraview only work with hexaders and teraeders so if it encounters a general polyeder it breaks it down into tets. An that are the diagonals you're seeing

Bernhard

terrybarnaby · May 29, 2009, 07:40

Thanks for the info. I thought that might be the case. It does make if difficult to visualise the mesh though.

Does anyone know if there any other software that will provide a 3D display more suitable for viewing the mesh.

May 27, 2009, 06:13	Viewing meshes	#1
terrybarnaby Member Terry Barnaby Join Date: Mar 2009 Location: Beam Ltd, UK Posts: 44 Rep Power: 17	Hi, I am trying to look at the mesh generated by snappyHexMesh in an effort to improve the mesh quality. Has anyone any suggestions on the best way to view the mesh for this purpose ? At the moment I am using paraview 3.4. I generate a slice for viewing the mesh around my object in 2D. I currently have a simple, unrefined, cube based mesh. With this paraview displays the set of 2D squares in a grid but adds diagonals to each square. This makes it difficult to view what the mesh actually is especially when I start refining it with snappyHexMesh. Or am I doing something wrong with Paraview ? Last edited by terrybarnaby; May 27, 2009 at 06:33.

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May 29, 2009, 07:40		#3
terrybarnaby Member Terry Barnaby Join Date: Mar 2009 Location: Beam Ltd, UK Posts: 44 Rep Power: 17	Thanks for the info. I thought that might be the case. It does make if difficult to visualise the mesh though. Does anyone know if there any other software that will provide a 3D display more suitable for viewing the mesh.