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Showing results 1 to 13 of 13 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX May 9, 2014, 03:19

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks This is covered in the Meshing tutorials. You can... This is covered in the Meshing tutorials. You can download these from the ANSYS Customer web site.

Forum: CFX May 9, 2014, 02:51

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks You need to make it into a multibody part. Then... You need to make it into a multibody part. Then the mesh will be 1:1.

Forum: CFX May 5, 2014, 20:41

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks If you are meshing in ANSYS meshing then you need... If you are meshing in ANSYS meshing then you need to make this into a multibody part. If you are meshing in ICEM then you just need a single surface between the volume for two different parts.

Forum: CFX May 5, 2014, 07:59

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks You join meshes with interfaces. Interfaces can... You join meshes with interfaces. Interfaces can be GGI or 1:1. All I am saying is that the interfaces should have contiguous nodes so you can use 1:1 interfaces.

Forum: CFX May 5, 2014, 07:36

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks Well, that is the problem then. You are getting... Well, that is the problem then. You are getting different motion on nodes on either side of the interface. Why do you have interfaces there? I suspect you do not need them. Mesh this body as one...

Forum: CFX May 5, 2014, 07:23

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks Do you have any interfaces (GGI interfaces) in... Do you have any interfaces (GGI interfaces) in this model?

Forum: CFX May 5, 2014, 06:49

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks Is there an interface at the end of the... Is there an interface at the end of the transition bit? I am trying to understand why it is modelling a step.

Forum: CFX May 4, 2014, 23:36

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks Can you post the surface mesh in that region and... Can you post the surface mesh in that region and a cross section through the volume mesh?

Forum: CFX May 2, 2014, 08:20

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks Replace the step with a short section where the... Replace the step with a short section where the wall condition is defined as "unspecified" motion. The mesh smoother will then transition it from the fully moving mesh to the stationary mesh.

Forum: CFX May 2, 2014, 07:49

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks The image loink was in the email alert but... The image loink was in the email alert but stripped from the forum post. I will try to post it again for you: http://tinypic.com/r/14kayh4/8 By the way, you cna post images directly in the forum...

Forum: CFX May 2, 2014, 07:35

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks The image was not attached. The image was not attached.

Forum: CFX May 2, 2014, 07:13

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks Have you looked at where the neg volume elements... Have you looked at where the neg volume elements are occuring? I bet something about your meshing setup is causing a wonky mesh.

Forum: CFX April 22, 2014, 06:26

Replies: 37 Unresolved Negative Element Volume Error Views: 2,886 Posted By ghorrocks If your mesh motion is large enough that you keep... If your mesh motion is large enough that you keep getting negative volume elements, then you should consider dynamic remeshing using mesh quality as a trigger.

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