[ICEM] negative Determinant 3x3x3 after applying O-grid

ticofiz · January 12, 2016, 18:27

Dear all,

I have been trying to mesh a T-junction with ICEM. The mesh without O-grid has bad quality so I try to use an O-grid as explained in many threads. The problem is that I get negative Determinant 3x3x3 after that. Could you please tell me what I am doing wrong? The geometry is made in Ansys DM. I have two days experience with ICEM.

Best wishes,
C.

ticofiz · January 13, 2016, 03:18

I have found the problem. I have not Blocked properly the geometry so some edges have not been associated with the proper curves. As soon as I split the Block as it should be, the negative determinant problem is gone. I still have to figure out why boundaries defined as parts in ICEM are not imported in FLUENT. But this is another problem.

Many thanks, at least for reading,
C.

January 12, 2016, 18:27	negative Determinant 3x3x3 after applying O-grid	#1
ticofiz New Member Alexander Comsa Join Date: Jan 2016 Posts: 15 Rep Power: 10	Dear all, I have been trying to mesh a T-junction with ICEM. The mesh without O-grid has bad quality so I try to use an O-grid as explained in many threads. The problem is that I get negative Determinant 3x3x3 after that. Could you please tell me what I am doing wrong? The geometry is made in Ansys DM. I have two days experience with ICEM. Best wishes, C.

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January 13, 2016, 03:18		#2
ticofiz New Member Alexander Comsa Join Date: Jan 2016 Posts: 15 Rep Power: 10	I have found the problem. I have not Blocked properly the geometry so some edges have not been associated with the proper curves. As soon as I split the Block as it should be, the negative determinant problem is gone. I still have to figure out why boundaries defined as parts in ICEM are not imported in FLUENT. But this is another problem. Many thanks, at least for reading, C.