I have an error when meshing.

nygrenm · January 14, 2015, 11:22

I am trying to mesh a heat exchanger however when I am meshing I get an error message saying that:

Possible Cause: Very sharp angles bewteen adjacent surface triangles (i.e. dihedral angles near 180 degrees).

Connectivity Error: Failed constructing consistent topological regions. See output window for additional details.

Can any one give me a reason why this might be happening?

shuai_manlou · January 17, 2015, 22:31

I am a fresh man in Star CCM+, but i wonder the problem may be lies in:
1. are there any holes or very sharp surfaces on your geometry?
2. whether the region is a single domain that the fluid will not "leak" somewhere?

me3840 · February 9, 2015, 01:02

This error will be followed by a list of points. Go to that portion of the geometry and see what the problem is.

rickcjmac · February 3, 2016, 12:55

This can also happen if the base size of the mesh is too big. In the navigation tree go to Simulation -> Continua -> Mesh -> Reference Values -> Base Size and reduce the value in the property window.

January 14, 2015, 11:22	I have an error when meshing.	#1
nygrenm New Member Sicher Nygren Join Date: Oct 2014 Posts: 11 Rep Power: 11	I am trying to mesh a heat exchanger however when I am meshing I get an error message saying that: Possible Cause: Very sharp angles bewteen adjacent surface triangles (i.e. dihedral angles near 180 degrees). Connectivity Error: Failed constructing consistent topological regions. See output window for additional details. Can any one give me a reason why this might be happening?

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January 17, 2015, 22:31		#2
shuai_manlou Member CAO Liushuai Join Date: Apr 2012 Posts: 30 Rep Power: 14	I am a fresh man in Star CCM+, but i wonder the problem may be lies in: 1. are there any holes or very sharp surfaces on your geometry? 2. whether the region is a single domain that the fluid will not "leak" somewhere?

February 9, 2015, 01:02		#3
me3840 Senior Member Join Date: Nov 2010 Location: USA Posts: 1,232 Rep Power: 24	This error will be followed by a list of points. Go to that portion of the geometry and see what the problem is.

February 3, 2016, 12:55		#4
rickcjmac New Member Richard Join Date: Jul 2012 Posts: 7 Rep Power: 13	This can also happen if the base size of the mesh is too big. In the navigation tree go to Simulation -> Continua -> Mesh -> Reference Values -> Base Size and reduce the value in the property window.