[ICEM] A simple question about length unit

lnk · July 26, 2012, 14:20

Hi everyone,

Here is the question. I designed my geometry in ICEM. I never specified the length unit. When i import the mesh to CFX, the length unit is defined automatically to meter which makes my geometry too large to have the correct simulation results. (My pipe is 4 cm long but it makes it 40 meters. So the pressure drop result doesn't make any sense. )May I ask how to set my geometry to the correct size without redoing it?

Best regards,
lnk

flotus1 · July 27, 2012, 04:23

When writing the mesh in ICEM, you can apply a scaling factor.

If you forgot to do so, you can still scale the mesh in CFX.

lnk · July 27, 2012, 04:26

Quote:

Originally Posted by flotus1

When writing the mesh in ICEM, you can apply a scaling factor.

If you forgot to do so, you can still scale the mesh in CFX.

Thank you very much. May I ask how to scale it at CFX?

Best,
lnk

BrolY · July 27, 2012, 04:27

ICEM is unitless. Simon already explained that in this forum, you should make a research.

But as Flotus said, you can scale your mesh when you export, or scale your geometry when you import it.

flotus1 · July 27, 2012, 04:33

Right click on the imported mesh, choose "transform mesh" and select "scale" as the type of transformation. Isn't this in the manual?

lnk · July 27, 2012, 04:34

Quote:

Originally Posted by BrolY

ICEM is unitless. Simon already explained that in this forum, you should make a research.

But as Flotus said, you can scale your mesh when you export, or scale your geometry when you import it.

But I can't scale it any more after I already imported the mesh, right?

Best,
lnk

flotus1 · July 27, 2012, 04:45

Sure you can. See my last post.

lnk · July 27, 2012, 05:01

Quote:

Originally Posted by flotus1

Sure you can. See my last post.

Thank you very much, Flotus and BrolY. I searched 'length unit' at the 'help CFX-pre' but didn't find the answer for that. Now the problem is solved. Thanks!

July 26, 2012, 14:20	A simple question about length unit	#1
lnk Senior Member lnk Join Date: Feb 2011 Location: Switzerland Posts: 118 Rep Power: 15	Hi everyone, Here is the question. I designed my geometry in ICEM. I never specified the length unit. When i import the mesh to CFX, the length unit is defined automatically to meter which makes my geometry too large to have the correct simulation results. (My pipe is 4 cm long but it makes it 40 meters. So the pressure drop result doesn't make any sense. )May I ask how to set my geometry to the correct size without redoing it? Best regards, lnk Last edited by lnk; July 26, 2012 at 15:40.

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July 27, 2012, 04:23		#2
flotus1 Super Moderator Alex Join Date: Jun 2012 Location: Germany Posts: 3,399 Rep Power: 46	When writing the mesh in ICEM, you can apply a scaling factor. If you forgot to do so, you can still scale the mesh in CFX.

July 27, 2012, 04:27		#4
BrolY Senior Member AB Join Date: Sep 2009 Location: France Posts: 323 Rep Power: 21	ICEM is unitless. Simon already explained that in this forum, you should make a research. But as Flotus said, you can scale your mesh when you export, or scale your geometry when you import it.

July 27, 2012, 04:33		#5
flotus1 Super Moderator Alex Join Date: Jun 2012 Location: Germany Posts: 3,399 Rep Power: 46	Right click on the imported mesh, choose "transform mesh" and select "scale" as the type of transformation. Isn't this in the manual?

July 27, 2012, 04:45		#7
flotus1 Super Moderator Alex Join Date: Jun 2012 Location: Germany Posts: 3,399 Rep Power: 46	Sure you can. See my last post.