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[GAMBIT] 3.5 years overtake by Ansys: Where are the enhancements in grid generation

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Old   January 17, 2012, 11:39
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Simon Pereira
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I am similar in that my background pre-dispositions me toward "boundary layer" or even "Prism". I think they went with "Inflation" since it is more generic. It can be used for near wall refinement of any mesh type, even if it is not actually prisms or used for a CFD boundary layer... Once you understand that inflation is a boundary layer, then we are all on the same page and it is not a problem anymore.

They are working to combine the good points of Gambit and DM... In fact all the Gambit developers who worked on Gambit Geometry and VT are now working on Gambit/ANSYS Meshing. Have you seen all the Virtual Topology stuff in ANSYS meshing lately? If you can be more specific about which good points you would like to see combined, we could discuss this in more detail.
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Old   January 17, 2012, 11:46
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Sijal Ahmed Memon (turboenginner@gmail.com)
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Quote:
1) Reflection is no problem in ICEM CFD... Go to Transform. You can reflect, copy/rotate, transform, scale, etc. It only takes a few clicks. When you do a transformation on the blocking you can have it automatically do the same for the associated geometry...

ANSYS Meshing has its own options (I am less familiar) under the "Create" menu. It can also handle "instances" automatically when they are specified in the CAD system or DM. You don't need to even specify the transformation, it just happens automatically.

2) I don't recall what "Net Surface" is, but perhaps if you tell me a bit more, I can tell you the equivalents.

3) ANSYS Meshing has inherited much of the surface meshing technology from its underlying sources. Gambit users can use the descendant of their sizing function (plus years of R&D to give beter control and quality) with the descendant of their delaunay triangulation surface meshing (lower memory requirements, higher quality, robustness and speed). And of course, prism has had many man years of development since Gambit (but that old gambit preview was really nice).
I would like to describe these points in detail with the help of images while keeping the ICEM and Gambit side by side. At the moment I am preparing them so that I clearly communicate my point of view and if possible, ANSYS /You may address these good tools in next release and it would be very nice to have these tools again with more power full technology of ICEM and ANSYS meshing.

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Old   January 17, 2012, 18:27
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Thanks, that is a great way to handle it... I will be sure to share the material with the product management group.

Best regards,

Simon
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