Defeaturing a CAD Model

dsking · September 19, 2012, 15:21

I am trying to mesh a complex CAD geometry (made in Pro-E) with many small parts that are not really relevant to the analysis.

What are some common methods of defeaturing the geometry so that it is "CFD-friendly"?

Is it usually easier to just recreate the geometry from scratch?

diamondx · September 19, 2012, 18:07

use ansys designmodeler, it has a body operation option, it will allow you to delete those elements...

dsking · September 21, 2012, 10:28

Thanks for the reply, I was wondering if there was a more time efficient way (automated), because I have over 1000 parts in the model and deleting parts individually would be very tedious.

Trues · September 21, 2012, 17:05

you could explore the global mesh controls under "Defeaturing" to apply an overall limit for pinch and defeaturing tolerances. I generally have avoided these and applied local pinch controls, but you could see what that has to offer

September 19, 2012, 15:21	Defeaturing a CAD Model	#1
dsking New Member dking Join Date: Aug 2012 Posts: 12 Rep Power: 13	I am trying to mesh a complex CAD geometry (made in Pro-E) with many small parts that are not really relevant to the analysis. What are some common methods of defeaturing the geometry so that it is "CFD-friendly"? Is it usually easier to just recreate the geometry from scratch?

September 19, 2012, 18:07		#2
diamondx Super Moderator Ghazlani M. Ali Join Date: May 2011 Location: Tokyo, Japan Posts: 1,385 Blog Entries: 23 Rep Power: 28	use ansys designmodeler, it has a body operation option, it will allow you to delete those elements... __________________ Regards, New to ICEM CFD, try this document --> https://goo.gl/KAOIwm Ali

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September 21, 2012, 10:28		#3
dsking New Member dking Join Date: Aug 2012 Posts: 12 Rep Power: 13	Thanks for the reply, I was wondering if there was a more time efficient way (automated), because I have over 1000 parts in the model and deleting parts individually would be very tedious.

September 21, 2012, 17:05		#4
Trues New Member Dustin Join Date: Jan 2012 Posts: 18 Rep Power: 14	you could explore the global mesh controls under "Defeaturing" to apply an overall limit for pinch and defeaturing tolerances. I generally have avoided these and applied local pinch controls, but you could see what that has to offer