[blockMesh] Wedge shape in blockMesh process

halowine · March 5, 2013, 11:51

hi,

Screenshot from 2013-03-05 11:43:25.jpg

I'm trying to make a wedge shape on a simple case for OpenFoam (see above).

I made this blockmesh file :
blockMeshDict (copy).txt

And like you see in the picture above, there is a problem with the prism block from a hex block. Every mesh line pointing the collapse vertice.

What I want is that the mesh become straight. Anyone know how to do that?

Thx

xiyuqiu · March 5, 2013, 20:41

Hi I would lower the mesh density first. Make it 3 or something for each direction. That way it is easier to see. My experience with this type of the problem is one or more of your vortex had the wrong coordinates.

Yosmcer · April 11, 2013, 04:07

Maybe you could try to put the collapse vertices in 2-10 (instead of 1-9). That would make the line converging this point, so the perpendiculars lines would be parallel to the 1-7 (and 9-15) line. Or maybe you could be more explicit about the "straight lines" you want?

March 5, 2013, 11:51	Wedge shape in blockMesh process	#1
halowine New Member Arthur Piquet Join Date: Mar 2013 Posts: 18 Rep Power: 13	hi, Screenshot from 2013-03-05 11:43:25.jpg I'm trying to make a wedge shape on a simple case for OpenFoam (see above). I made this blockmesh file : blockMeshDict (copy).txt And like you see in the picture above, there is a problem with the prism block from a hex block. Every mesh line pointing the collapse vertice. What I want is that the mesh become straight. Anyone know how to do that? Thx

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March 5, 2013, 20:41		#2
xiyuqiu Member yu Join Date: Nov 2010 Posts: 39 Rep Power: 15	Hi I would lower the mesh density first. Make it 3 or something for each direction. That way it is easier to see. My experience with this type of the problem is one or more of your vortex had the wrong coordinates.

April 11, 2013, 04:07		#3
Yosmcer Member Yosmcer Mocktai Join Date: Apr 2013 Location: Behind a computer Posts: 50 Rep Power: 17	Maybe you could try to put the collapse vertices in 2-10 (instead of 1-9). That would make the line converging this point, so the perpendiculars lines would be parallel to the 1-7 (and 9-15) line. Or maybe you could be more explicit about the "straight lines" you want?