[ICEM] how to increase the number of elements in a specific part of the pipe.

TallesC · January 29, 2013, 09:12

Guys, I'm working on a pipe with bows and want to increase the number of elements at the ends of the pipe, tried to edge by Params but elements of the center pipe were very large. Anyone know how exactly do I do this??

thank you!

diamondx · January 29, 2013, 10:42

you need to increase the number of elements then

TallesC · January 29, 2013, 15:16

I can not because the geometry is large and increasing number of elements can make it difficult to run on time, any other ideas?

macfly · January 29, 2013, 20:04

1. Refine mesh in a block, refinement has to be level 3 or more. See fig. 1.
2. Convert to Unstruct Mesh
3. Resolve refinements. See fig.2.

It works well in 2D and 3D.

Far · January 30, 2013, 11:10

Can we merge meshes in 2d? (I assume you are using merge operation after refinement.)

Edit: Yes it can be done but only for 3:1 ratio refinement.

diamondx · January 30, 2013, 14:14

as i never used this function, i was wondering if we don't use the resolve refinement in edit mesh, is the mesh still good for analysis in fluent. i mean blocking -» refinement -» export

TallesC · January 30, 2013, 14:17

Thank you Guys, but I`m split de block and use edge param for increase number de elements in a specific part of the pipe...its working...

Far · January 30, 2013, 14:22

Quote:

Originally Posted by diamondx

as i never used this function, i was wondering if we don't use the resolve refinement in edit mesh, is the mesh still good for analysis in fluent. i mean blocking -» refinement -» export

I have successfuly used this function with 3:1 refinement.

Now to your question: No it will not work in 2d in R 14(Ref : Post # 63 http://www.cfd-online.com/Forums/ans...linders-4.html

However in 3d this should work as Fluent supports hanging nodes.

January 29, 2013, 09:12	how to increase the number of elements in a specific part of the pipe.	#1
TallesC Senior Member Talles Caio Join Date: Oct 2012 Location: Brazil Posts: 101 Rep Power: 13	Guys, I'm working on a pipe with bows and want to increase the number of elements at the ends of the pipe, tried to edge by Params but elements of the center pipe were very large. Anyone know how exactly do I do this?? thank you!

January 29, 2013, 10:42		#2
diamondx Super Moderator Ghazlani M. Ali Join Date: May 2011 Location: Tokyo, Japan Posts: 1,385 Blog Entries: 23 Rep Power: 28	you need to increase the number of elements then __________________ Regards, New to ICEM CFD, try this document --> https://goo.gl/KAOIwm Ali

January 30, 2013, 11:10		#5
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	Can we merge meshes in 2d? (I assume you are using merge operation after refinement.) Edit: Yes it can be done but only for 3:1 ratio refinement. Last edited by Far; January 30, 2013 at 11:41.

January 30, 2013, 14:14		#6
diamondx Super Moderator Ghazlani M. Ali Join Date: May 2011 Location: Tokyo, Japan Posts: 1,385 Blog Entries: 23 Rep Power: 28	as i never used this function, i was wondering if we don't use the resolve refinement in edit mesh, is the mesh still good for analysis in fluent. i mean blocking -» refinement -» export __________________ Regards, New to ICEM CFD, try this document --> https://goo.gl/KAOIwm Ali

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January 29, 2013, 15:16		#3
TallesC Senior Member Talles Caio Join Date: Oct 2012 Location: Brazil Posts: 101 Rep Power: 13	I can not because the geometry is large and increasing number of elements can make it difficult to run on time, any other ideas?

January 30, 2013, 14:17		#7
TallesC Senior Member Talles Caio Join Date: Oct 2012 Location: Brazil Posts: 101 Rep Power: 13	Thank you Guys, but I`m split de block and use edge param for increase number de elements in a specific part of the pipe...its working...