[svantevid]

I'm using Ansys Meshing (in Workbench) to create the mesh.

I'm having some difficulties in creating inflation on the border between 2 bodies. I managed the fix the inflation on the green body (image bellow) by increasing the maximum angle setting, but I cannot fix the inflation on the grey part.

What I tried so far (without success):
- define inflation with both bodies together
- different sizing on all the edges, connected to the problematic part of geometry
- shared topology

Image:

inflation_2bodies1.jpg

[Gert-Jan]

In the sticky notes, on top of the list of queries, you can find how to include images in the posts (see internal link below), instead of using links to external websites which I won't open.

https://www.cfd-online.com/Wiki/Ansy...n_the_forum.3F

[svantevid]

Originally Posted by Gert-Jan

In the sticky notes, on top of the list of queries, you can find how to include images in the posts (see internal link below), instead of using links to external websites which I won't open.

https://www.cfd-online.com/Wiki/Ansy...n_the_forum.3F

Thanks for the tip, I edited the original post.

[Gert-Jan]

The bodies are not connected correctly. Do you use Spaceclaim or Design Modeler?

[svantevid]

Originally Posted by Gert-Jan

The bodies are not connected correctly. Do you use Spaceclaim or Design Modeler?

Spaceclaim.

What do you mean by not connected correctly?
If you are referring to the non-conformal mesh, it is on purpose because I had some convergence problems when doing a similar geometry in the past. I also tried with Shared Topology functionality and conformal mesh, but the problems were the same, see bellow.

inflation_2bodies_share_topo.jpg

[evcelica]

There could be a geometric problem with the smaller sharp body. (small hidden edge?)
Seems weird to not have a conformal mesh here?
Is this one single fluid volume or two separated by a solid interface?

can you use a conformal mesh (share topology) then mesh the larger body first, then the smaller sharp one? Or does that not make a difference?

[svantevid]

Originally Posted by evcelica

There could be a geometric problem with the smaller sharp body. (small hidden edge?)
Seems weird to not have a conformal mesh here?
Is this one single fluid volume or two separated by a solid interface?

can you use a conformal mesh (share topology) then mesh the larger body first, then the smaller sharp one? Or does that not make a difference?

I checked again, no hidden edges, small faces...
Single fluid volume but it's divided, one is a stationary and the other is rotary part - I'm doing an analysis of a centrifugal pump.

I tried your strategy, but couldn't get it to mesh.

Is it possible that the geometry of the sharp part is just too problematic for the inflation layer to grow from the surface?

[svantevid]

Managed to solve the problem by changing the border shape between bodies.

inflation_2bodies2.jpg