[sarbakhshian]

I have a geometry with multiple body parts, whenever I choose "share" option in SpaceClaim, Ansys mesher fails to mesh my geometry with "multizone" method and I'm not satisfied with unstructured mesh using other methods. However, when I set my Component in "grouped" mode in SpaceClaim, I have more control on edge sizing and a good structure mesh happens with multizone method.

Would I face a problem in future if I do not choose "share" option? Would I get correct results from my analysis?

I'm also attaching a picture of my geometry

Thanks for your attention.

[guivalle]

If you analyze the mesh and there are no inconsistencies or errors, and you are satisfied, I think there will be no problem. But if you want, you can convert the geometry with multiple parts into one with a single part, using the "Form New Part" functionality in the DesignModeler.

[sarbakhshian]

The picture i'm attaching is the geometry i'm trying to mesh. It is not very complicated but ansys mesher fails to mesh it with Hex elements and i face the error in the picture, do you have any suggestion on meshing method? the geometry seems sweepable and i think meshing with hex elements would be possible.

[guivalle]

Do you need it to be in two different bodies for the analysis? Because if not I would turn it into a single geometry. I would also check the parameters, as the warning itself says. Element size, mesh format....

[sarbakhshian]

Well it doesn't matter wethere i mesh it separately or in a unit body, it's giving me the same error no matter what parameter i use.
The Structure has only 12mm of thickness, comparing with other dimensions i think it could have shell behavior. What do you think of meshing with shell elements instead of solid elements? Problem is, i don't know how to change the element type in Ansys Mesh...

[guivalle]

I assume that your body is a solid, right? So you cannot use shell elements on a solid body. If it is a solid body, but you want to use shell elements, you need to convert the body into a surface, using the Midsurface tool in SpaceClaim. The only way i know to change the element type is in mesh settings, and set the Element Order to Linear Or Quadratic. You can change this more specifically with Mechanical APDL, but then I recommend checking the manual, as I don't understand much about this module.

[cbooks77]

Why not just use Fluent's Mosaic meshing and create a nice polyhedral or poly-hexcore mesh? I have always gotten extremely similar results when using a high quality polyhex or poly mesh compared to structured hex. Mosaic mesher is really much faster than ansys mesher and its alot faster with the workflow.

[sarbakhshian]

well i'm gonna do a FSI analysis for a fluid and solid domain, Do you think the meshing tool you are mentioning would work for a coupled analysis??

[cbooks77]

If you are doing a 2 way coupled FSI then you mesh your solid geometry in Ansys mesher for the mechanical solver and you can mesh your fluid volume in the Fluent mesher separately. The solvers are then Hooked via ansys system coupling which handles the data transfer during coupling steps between solvers. If you are just doing a much more simple 1 way FSI then it doesn't really matter as you are solving the fluid flow separately and then just importing that flow field data into he mechanical solver to imparted on the geometry as a fluid flow load. 2 way FSI is much much more difficult and requires small time steps usually. Good luck

[atelcikti1]

if u will solve heat transfer always make share topology, prepare ur bodies in spaceclaim and export to design modeler. group in one part from new part option. then mesh it, be sure cells share same faces in your mesh.

[rajkumar7430]

Can I use share topology for cyclone separator design?