[ICEM] Dimension Problem Between Geometry, ICEM and Fluent

gokkayaoguzhan · August 28, 2019, 09:57

Hi everyone,

I am workıng on an internal pipe flow problem so i generate my geometry in Design Modeler and then send it to ICEM to observe flow better. After i give node numbers and ratios, convert it to unstructured mesh. Finally, send ICEM mesh to Fluent solver but dimensions doesn't match with one that i decided in Design modeler. Also, i realized some differences in ICEM too.

Diameter in Design Modeler: 0.5 mm
Diameter in ICEM : 0.500000002374872 mm
Diameter in Fluent : 0.4995726 mm

Do you know where this mismatch comes from?

Far · August 28, 2019, 12:23

Will it matter? Any how there are geometry tolerances in each software. Play with them

gokkayaoguzhan · August 29, 2019, 02:56

Being exact is very important for this geometry. I scaled dimensions in Fluent but i am suspicious about any remaining fractions or disruption in the mesh caused by this scaling function.

August 28, 2019, 09:57	Dimension Problem Between Geometry, ICEM and Fluent	#1
gokkayaoguzhan New Member Oguzhan Gokkaya Join Date: Aug 2019 Posts: 2 Rep Power: 0	Hi everyone, I am workıng on an internal pipe flow problem so i generate my geometry in Design Modeler and then send it to ICEM to observe flow better. After i give node numbers and ratios, convert it to unstructured mesh. Finally, send ICEM mesh to Fluent solver but dimensions doesn't match with one that i decided in Design modeler. Also, i realized some differences in ICEM too. Diameter in Design Modeler: 0.5 mm Diameter in ICEM : 0.500000002374872 mm Diameter in Fluent : 0.4995726 mm Do you know where this mismatch comes from? Last edited by gokkayaoguzhan; August 29, 2019 at 03:07.

August 29, 2019, 02:56		#3
gokkayaoguzhan New Member Oguzhan Gokkaya Join Date: Aug 2019 Posts: 2 Rep Power: 0	Being exact is very important for this geometry. I scaled dimensions in Fluent but i am suspicious about any remaining fractions or disruption in the mesh caused by this scaling function. __________________ gokkayaoguzhan

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August 28, 2019, 12:23		#2
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	Will it matter? Any how there are geometry tolerances in each software. Play with them