[ANSYS Meshing] Need help in meshing complex fluid domain

Dinesh_Dhande · January 11, 2017, 12:51

Dear Friends,
I am trying to mesh a complex fluid domain in ansys workbench .
I want hex meshing for the domain. Can anyone help me out for achieving this. The fluid domain is attached for information and idea of the flow domain.
Thanx in advance.

Regards,
Dinesh

Antanas · January 13, 2017, 13:56

Quote:

Originally Posted by Dinesh_Dhande

Dear Friends,
I am trying to mesh a complex fluid domain in ansys workbench .
I want hex meshing for the domain. Can anyone help me out for achieving this. The fluid domain is attached for information and idea of the flow domain.
Thanx in advance.

Regards,
Dinesh

Why do u use two separate bodies? Unite 'em and try to use multizone meshing method.

Dinesh_Dhande · January 14, 2017, 10:24

Quote:

Originally Posted by Antanas

Why do u use two separate bodies? Unite 'em and try to use multizone meshing method.

Dear Antanas,
THANKS for ur reply. Actually those are three bodies not two. One is long cylindrical type and vertical cylinder is of two parts. So three bodies.

Antanas · January 14, 2017, 11:28

Quote:

Originally Posted by Dinesh_Dhande

Dear Antanas,
THANKS for ur reply. Actually those are three bodies not two. One is long cylindrical type and vertical cylinder is of two parts. So three bodies.

Whatever. My previous message still applies

Zbynek · January 17, 2017, 06:22

You can try to use the multizone method. However, for a better control of the meshing process I would rather recommend you to split the domain in several bodies and mesh them using the Sweep method. So what you need to understand first is how the Sweep method works and how you can divide the domain using commands such as slice, extrude, revolve etc.

Dinesh_Dhande · January 17, 2017, 21:51

@Zbynek , Thank you so much.
The bodies are already separated. Body 1 is sweepable. Body 2 is inserted in body 3 and hence has irregular shape. So i am stuck up. I can share geometry file if any one want to help me......thanks in advance.....

Zbynek · January 18, 2017, 03:39

As I said, you need to understand what the Sweep method does. That it creates a surface mesh, sweeps it along a path and imprints the mesh on another surface. Imagine a simple cylinder standing on one of its bases. The Sweep method creates a surface mesh on one of the two bases, then sweeps the mesh along the height of the cylinder while slicing it horizontally to create cells. Finally, the surface mesh reaches the second base. Done. You will apply the same to your geometry. There are examples in the ANSYS tutorials where the Sweep method is demonstrated.

From your picture, it seems to me that the cylinder does not go through the whole arc volume. That would make meshing of the small volume below the cylinder problematic. Extend the cylinder till the lower face of the arc volume.

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January 17, 2017, 06:22		#5
Zbynek Member Join Date: Jun 2016 Posts: 66 Rep Power: 10	You can try to use the multizone method. However, for a better control of the meshing process I would rather recommend you to split the domain in several bodies and mesh them using the Sweep method. So what you need to understand first is how the Sweep method works and how you can divide the domain using commands such as slice, extrude, revolve etc.

January 17, 2017, 21:51		#6
Dinesh_Dhande New Member Dinesh Join Date: Nov 2009 Location: India Posts: 24 Rep Power: 16	@Zbynek , Thank you so much. The bodies are already separated. Body 1 is sweepable. Body 2 is inserted in body 3 and hence has irregular shape. So i am stuck up. I can share geometry file if any one want to help me......thanks in advance.....

January 18, 2017, 03:39		#7
Zbynek Member Join Date: Jun 2016 Posts: 66 Rep Power: 10	As I said, you need to understand what the Sweep method does. That it creates a surface mesh, sweeps it along a path and imprints the mesh on another surface. Imagine a simple cylinder standing on one of its bases. The Sweep method creates a surface mesh on one of the two bases, then sweeps the mesh along the height of the cylinder while slicing it horizontally to create cells. Finally, the surface mesh reaches the second base. Done. You will apply the same to your geometry. There are examples in the ANSYS tutorials where the Sweep method is demonstrated. From your picture, it seems to me that the cylinder does not go through the whole arc volume. That would make meshing of the small volume below the cylinder problematic. Extend the cylinder till the lower face of the arc volume.