[ICEM] Terrible Mesh in the middle slice

Eleven Leo · January 2, 2019, 16:25

This is a 60deg mesh, and it looks fine from outside. However, when you make a slice in the middle of the mesh (i.e., 30 deg), the mesh is terrible, as you can seen. Other slices (e.g., 20, 25, etc) are all OK, only the middle slice is wrong. Anyone can help me find out the reason or possible reason?
Thank you very much for your kind help.

Best

The following are outside mesh and middle slice:

OutsideMesh.jpg

MiddleSlice.jpg

Gert-Jan · January 3, 2019, 18:16

I am not convinced this is a real error. It might be that it is just a matter of inaccuracies when slicing the mesh. Please check the mesh quality perpendicular to this plane: take a z-plane.

bluebase · January 4, 2019, 19:48

Hi Yaopeng,

i agree with Gert-Jan. This is not an error but a property of a slice.

Instead of using a slice, you might should try the feature "Scan planes". It is hidden in the context menu of Premesh - in the model tree.
With this feature you can draw and select specific layers of your blocking.

Best regards,
Sebastian

January 2, 2019, 16:25	Terrible Mesh in the middle slice	#1
Eleven Leo Member Yaopeng Li Join Date: Dec 2017 Location: Lund, Sweden Posts: 50 Rep Power: 8	This is a 60deg mesh, and it looks fine from outside. However, when you make a slice in the middle of the mesh (i.e., 30 deg), the mesh is terrible, as you can seen. Other slices (e.g., 20, 25, etc) are all OK, only the middle slice is wrong. Anyone can help me find out the reason or possible reason? Thank you very much for your kind help. Best The following are outside mesh and middle slice: OutsideMesh.jpg MiddleSlice.jpg

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[snappyHexMesh] SHM problem : KVLCC2 with appendage mesh	sc.park	OpenFOAM Meshing & Mesh Conversion	1	March 13, 2016 14:28
[snappyHexMesh] No layers in a small gap	bobburnquist	OpenFOAM Meshing & Mesh Conversion	6	August 26, 2015 10:38
[snappyHexMesh] SnappyHexMesh no layers and no decent mesh for complex geometry	pizzaspinate	OpenFOAM Meshing & Mesh Conversion	1	February 25, 2015 08:05
[snappyHexMesh] Layers:problem with curvature	giulio.topazio	OpenFOAM Meshing & Mesh Conversion	10	August 22, 2012 10:03
fluent add additional zones for the mesh file	SSL	FLUENT	2	January 26, 2008 12:55

January 3, 2019, 18:16		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,913 Rep Power: 28	I am not convinced this is a real error. It might be that it is just a matter of inaccuracies when slicing the mesh. Please check the mesh quality perpendicular to this plane: take a z-plane.

January 4, 2019, 19:48		#3
bluebase Senior Member Sebastian Engel Join Date: Jun 2011 Location: Germany Posts: 567 Rep Power: 21	Hi Yaopeng, i agree with Gert-Jan. This is not an error but a property of a slice. Instead of using a slice, you might should try the feature "Scan planes". It is hidden in the context menu of Premesh - in the model tree. With this feature you can draw and select specific layers of your blocking. Best regards, Sebastian