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Forum: ANSYS Meshing & Geometry

December 28, 2009, 00:01

Replies: 24

[ICEM] domain interface in ICEM for fluent

Views: 16,131

Posted By PSYMN

?

Sorry, I am not understanding what you are showing me in that image... I also don't get the blue and red lines... Perhaps it is too late.

However, I can tell you that we don't usually allow the...

Forum: ANSYS Meshing & Geometry

December 9, 2009, 09:49

Replies: 24

[ICEM] domain interface in ICEM for fluent

Views: 16,131

Posted By PSYMN

Bottom up tetra is smoother.

Do you mean you are using an OCTREE Tetra mesher and are getting the sudden 2 to 1 size transitions? This is how OCTREE tetra is.

For the smoothest Tetra, you could start with an OCTREE mesh (or...

Forum: ANSYS Meshing & Geometry

November 23, 2009, 15:07

Replies: 24

[ICEM] domain interface in ICEM for fluent

Views: 16,131

Posted By PSYMN

Squish and stretch...

Hey Camilia,

You may have got yourself into trouble when projecting to the geometry... This is not how I suggested doing the squish and stretch technique.

I recommend scaling your geometry...

Forum: ANSYS Meshing & Geometry

November 2, 2009, 19:06

Replies: 24

[ICEM] domain interface in ICEM for fluent

Views: 16,131

Posted By PSYMN

Mesh methods.

Hmm, the angles of a triangle add up to 180, so if one angle is greater than 90, then others must be less.

If he really just wants to test poor quality mesh, then perhaps we could stretch your...

Forum: ANSYS Meshing & Geometry

October 16, 2009, 09:25

Replies: 24

[ICEM] domain interface in ICEM for fluent

Views: 16,131

Posted By PSYMN

Extrude or Sweep...

You could extrude the surface mesh from one side to the other... You can type in equations to have it grow a certain way, etc.

You could also use ICEM CFD hexa to create a swept block (easiest...

Forum: ANSYS Meshing & Geometry

October 13, 2009, 17:16

Replies: 24

[ICEM] domain interface in ICEM for fluent

Views: 16,131

Posted By PSYMN

Prism and Tetra are supposed to work together...

Unless you are talking about sweeping prism from one side to the other (swept mesh), you should expect some tetras in the middle. Actually, you usually expect more tetras than prisms in a...

Forum: ANSYS Meshing & Geometry

October 12, 2009, 14:12

Replies: 24

[ICEM] domain interface in ICEM for fluent

Views: 16,131

Posted By PSYMN

Prism...

Generally, for CFD, a Tetra/Prism mesh is better than just using Tetras for capturing wall physics. Prism mesh is important to get more nodes normal to the wall without increasing the number of...

Forum: ANSYS Meshing & Geometry

September 22, 2009, 10:10

Replies: 24

[ICEM] domain interface in ICEM for fluent

Views: 16,131

Posted By PSYMN

For Camelia (who jumped on the end of this post)

Hey Camelia,

1)I am not clear on your mesh sizes… What do you mean an element size of 64 and a maximum element size of 2? Do you mean you set 64 as the global maximum and 2 as the maximum...

Forum: ANSYS Meshing & Geometry

September 21, 2009, 09:45

Replies: 24

[ICEM] domain interface in ICEM for fluent

Views: 16,131

Posted By PSYMN

Material points...

If you are doing two regions for CHT, then you need two material points… Put a solid material point in the one section and a Fluid material point in the other. You really only need one surface...

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