[ICEM] Problem with meshing 2D geometry

Nicolastheterminator · December 18, 2013, 08:59

Hi,

I have been having this problem for days, and I still don't understand what is wrong. I have been doing a 2D hexa mesh generation for 2 quadrilaterals together and just want to look at heat flux across them.

I create my points,lines and surfaces, and then create a 2D planar block. I cut the block into 2 separate blocks, and associate the lines to the edges. Then I associate each surface to the corresponding block face. When I load my mesh from blocking, I always get the problem of single edges around my mesh when i do a mesh quality check. Ansys Fluent consequently does not load the mesh complaining of zones not referenced by the grid.
Please can you help me?

Regards,
Nicholas

kad · December 18, 2013, 21:39

Single edges on the boundaries of a 2D mesh are normal. Look up the definition of single edge in the manual.

If I remember correctly the "zones not referenced by the grid" message shows up by default, when there is a mesh on both sides of a boundary, which would be the interface between the two blocks. I guess there is also a shadow zone created at the interface. For heat transfer over the interface the coupled wall option is the right way to go. Look up coupled wall in the fluent manual.

December 18, 2013, 08:59	Problem with meshing 2D geometry	#1
Nicolastheterminator New Member Nick Join Date: Sep 2012 Posts: 11 Rep Power: 13	Hi, I have been having this problem for days, and I still don't understand what is wrong. I have been doing a 2D hexa mesh generation for 2 quadrilaterals together and just want to look at heat flux across them. I create my points,lines and surfaces, and then create a 2D planar block. I cut the block into 2 separate blocks, and associate the lines to the edges. Then I associate each surface to the corresponding block face. When I load my mesh from blocking, I always get the problem of single edges around my mesh when i do a mesh quality check. Ansys Fluent consequently does not load the mesh complaining of zones not referenced by the grid. Please can you help me? Regards, Nicholas

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December 18, 2013, 21:39		#2
kad Senior Member Join Date: Feb 2013 Location: Germany Posts: 200 Rep Power: 24	Single edges on the boundaries of a 2D mesh are normal. Look up the definition of single edge in the manual. If I remember correctly the "zones not referenced by the grid" message shows up by default, when there is a mesh on both sides of a boundary, which would be the interface between the two blocks. I guess there is also a shadow zone created at the interface. For heat transfer over the interface the coupled wall option is the right way to go. Look up coupled wall in the fluent manual.