Cannot set boundary conditions in Pointwise

filipwa · November 13, 2010, 06:53

I am trying to learn how to use Pointwise for 3D meshing and I have encountered some problems when it comes to selecting boundary conditions.

The mesh I am playing with at the moment is the PipeInACube which is one of the tutorials that come with the software.

When selecting BC, I would like to give the pipe inside the cube a wall condition. However, selecting those two domains that make up the pipe is not possible for some reason... And looking in "List, Domains" those two domains are also greyed out...

Why is this? And how should I go about setting BC for these two domains?

Thanks!

jchawner · November 13, 2010, 16:17

Hi Filip. It sounds like you haven't created any blocks yet. Boundary conditions can only be set on regions of blocks. Make sure you have set your CAE solver to something that's 3D. Then you can set BCs.

filipwa · November 14, 2010, 01:29

Quote:

Originally Posted by jchawner

Hi Filip. It sounds like you haven't created any blocks yet. Boundary conditions can only be set on regions of blocks. Make sure you have set your CAE solver to something that's 3D. Then you can set BCs.

I have created two blocks. One between the "exterior of the pipe"/"interior of the cube" and one of the "interior of the pipe". I can set BC to all domains except for the pipe...

jchawner · November 14, 2010, 14:01

OK, strike one for me ;-)

The fact that you made two blocks (inside and outside the pipe) is the culprit. In the current production release you can't overwrite a connection with a BC. You can in the version that should be released before the end of Nov.

If you delete the block inside the pipe and only model the fluid between the pipe and the box, you'll be able to set the BC.

That restriction will be lifted in V16.04.

filipwa · November 18, 2010, 03:35

Quote:

Originally Posted by jchawner

OK, strike one for me ;-)

The fact that you made two blocks (inside and outside the pipe) is the culprit. In the current production release you can't overwrite a connection with a BC. You can in the version that should be released before the end of Nov.

If you delete the block inside the pipe and only model the fluid between the pipe and the box, you'll be able to set the BC.

That restriction will be lifted in V16.04.

Thank you for your answer!

jchawner · November 29, 2010, 16:11

FYI, Pointwise V16.04 has been released. Download it from Pointwise's web site.

November 13, 2010, 06:53	Cannot set boundary conditions in Pointwise	#1
filipwa New Member Filip Wallberg Join Date: Oct 2010 Posts: 23 Rep Power: 15	I am trying to learn how to use Pointwise for 3D meshing and I have encountered some problems when it comes to selecting boundary conditions. The mesh I am playing with at the moment is the PipeInACube which is one of the tutorials that come with the software. When selecting BC, I would like to give the pipe inside the cube a wall condition. However, selecting those two domains that make up the pipe is not possible for some reason... And looking in "List, Domains" those two domains are also greyed out... Why is this? And how should I go about setting BC for these two domains? Thanks!

November 13, 2010, 16:17		#2
jchawner Senior Member John Chawner Join Date: Mar 2009 Location: Fort Worth, Texas, USA Posts: 275 Rep Power: 18	Hi Filip. It sounds like you haven't created any blocks yet. Boundary conditions can only be set on regions of blocks. Make sure you have set your CAE solver to something that's 3D. Then you can set BCs. __________________ John Chawner / jrc@pointwise.com / www.pointwise.com Blog: http://blog.pointwise.com/ on Twitter: @jchawner

November 14, 2010, 14:01		#4
jchawner Senior Member John Chawner Join Date: Mar 2009 Location: Fort Worth, Texas, USA Posts: 275 Rep Power: 18	OK, strike one for me ;-) The fact that you made two blocks (inside and outside the pipe) is the culprit. In the current production release you can't overwrite a connection with a BC. You can in the version that should be released before the end of Nov. If you delete the block inside the pipe and only model the fluid between the pipe and the box, you'll be able to set the BC. That restriction will be lifted in V16.04. __________________ John Chawner / jrc@pointwise.com / www.pointwise.com Blog: http://blog.pointwise.com/ on Twitter: @jchawner

November 29, 2010, 16:11		#6
jchawner Senior Member John Chawner Join Date: Mar 2009 Location: Fort Worth, Texas, USA Posts: 275 Rep Power: 18	FYI, Pointwise V16.04 has been released. Download it from Pointwise's web site. __________________ John Chawner / jrc@pointwise.com / www.pointwise.com Blog: http://blog.pointwise.com/ on Twitter: @jchawner

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