[ANSYS Meshing] Displaying solid domains in CFD Post without meshing them.

hda · January 21, 2012, 20:10

I am doing a 2D internal flow simulation. I want the enclosing solid domains to be visible in the post processing. For example, I need the wall thickness of a pipe to be visible, not only its inner boundary.

If I suppress the solid domains and mesh only the fluid ones, all I see in CFD Post are the fluid domains and their boundaries.

If I mesh both the solid and fluid domains, I see the solid domains grayed out in CFD Post. Great, but isn't there a way to avoid the unnecessary meshing of the solid domains?

How can we display solid domains in post-processing without actually meshing them?

Any ideas?

PSYMN · January 24, 2012, 00:03

It is the mesh that is sent from the mesher to the solver, so no, I don't think there is any way around meshing those solid regions if you want to post process with them...

However, they could probably be meshed very coarsely if you were trying to reduce the size of the file.

hda · January 24, 2012, 00:21

Thanks,

Yes, that's what I do now, a very coarse mesh.

I thought, in Workbench environment, solid domain data in Design Modeler could somehow be incorporated to CFD Post, without Mesher and Solver seeing those domains.

This could actually be a useful improvement to the software for visualizing complex enclosures without unnecessarily meshing them.

wilandlane · October 20, 2016, 11:52

Has this been updated in any new version(s) of ANSYS? I would like to do the same thing as OP, visualize the solid body (non-interacting) around the fluid domain. This is easy to do in something like Solidworks, but I can't figure it out for CFD Post...

vasava · October 24, 2016, 08:33

You can create stl surface and import in CFD-post. Select File>Import>Import Surface or Line Data and in the drop-down menu you will see STL files option. Should be straightforward.

Edit:
This option is available V17 onward. I am not sure about older versions.

Edit:2
I checked and it is not possible for older versions.

wilandlane · October 24, 2016, 10:26

That works perfectly, Vasava!

I was trying to use the existing solid body within SpaceClaim/Fluent, but this is much easier.

January 21, 2012, 20:10	Displaying solid domains in CFD Post without meshing them.	#1
hda New Member Join Date: Jan 2012 Posts: 4 Rep Power: 0	I am doing a 2D internal flow simulation. I want the enclosing solid domains to be visible in the post processing. For example, I need the wall thickness of a pipe to be visible, not only its inner boundary. If I suppress the solid domains and mesh only the fluid ones, all I see in CFD Post are the fluid domains and their boundaries. If I mesh both the solid and fluid domains, I see the solid domains grayed out in CFD Post. Great, but isn't there a way to avoid the unnecessary meshing of the solid domains? How can we display solid domains in post-processing without actually meshing them? Any ideas?

January 24, 2012, 00:03		#2
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	It is the mesh that is sent from the mesher to the solver, so no, I don't think there is any way around meshing those solid regions if you want to post process with them... However, they could probably be meshed very coarsely if you were trying to reduce the size of the file. __________________ ----------------------------------------- Please help guide development at ANSYS by filling in these surveys Public ANSYS ICEM CFD Users Survey This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)... CFD Online Users Survey

January 24, 2012, 00:21		#3
hda New Member Join Date: Jan 2012 Posts: 4 Rep Power: 0	Thanks, Yes, that's what I do now, a very coarse mesh. I thought, in Workbench environment, solid domain data in Design Modeler could somehow be incorporated to CFD Post, without Mesher and Solver seeing those domains. This could actually be a useful improvement to the software for visualizing complex enclosures without unnecessarily meshing them. Last edited by hda; January 24, 2012 at 00:26. Reason: rewording

October 24, 2016, 08:33		#5
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 23	You can create stl surface and import in CFD-post. Select File>Import>Import Surface or Line Data and in the drop-down menu you will see STL files option. Should be straightforward. Edit: This option is available V17 onward. I am not sure about older versions. Edit:2 I checked and it is not possible for older versions. wilandlane likes this. Last edited by vasava; October 24, 2016 at 08:46. Reason: edit

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October 20, 2016, 11:52		#4
wilandlane New Member William Join Date: Apr 2013 Posts: 11 Rep Power: 13	Has this been updated in any new version(s) of ANSYS? I would like to do the same thing as OP, visualize the solid body (non-interacting) around the fluid domain. This is easy to do in something like Solidworks, but I can't figure it out for CFD Post...

October 24, 2016, 10:26		#6
wilandlane New Member William Join Date: Apr 2013 Posts: 11 Rep Power: 13	That works perfectly, Vasava! I was trying to use the existing solid body within SpaceClaim/Fluent, but this is much easier.