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ICEM CFD Swept surface does not follow curves

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Old   November 15, 2020, 07:57
Question ICEM CFD Swept surface does not follow curves
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MDN
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Dear all,

I am attempting to extend the edge of a structure by using the 'sweep surface' tool and selecting the curves of the edges. However, I find the swept surface is not always attached to the original surface and doesn't always follow the curves perfectly. Is there a way to fix this?

Thank you very much.
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Old   December 2, 2020, 13:37
Smile Thank you
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Hi,


Thanks so much for your offer to help. I was using ICEM CFD and I found that although there were gaps in the model, after meshing in ICEM CFD there were no visible gaps in the mesh. Does this suggest that I don't need to worry about the gaps in the model?

Thanks a lot.
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Old   December 4, 2020, 14:20
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Sebastian Engel
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Hi MDN,


the graphical view is only a representation of the actual model. The graphics are triangulated and only resolves geometries until a given limit. You can decrease the triangulation tolerance to resolve finer structures at the cost of more workload on your graphics card.

Have a look into the options in the general tab if i remember correctly, there you should find triangulation tolerance.


If this does not work, try decreasing the topology tolerance, i might mixed those two quantites up, and cant check my suggestion.

Somewhat off-topic: This one is a nice read for more abstract perspective: https://blog.pointwise.com/2017/11/2...ry-is-inexact/
In contrast to CAD, ICEM (or most mesh generators) needs mathematically correctly intersected geometries in order to determine what's inside and outside.




Best,
Sebastian
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Old   December 6, 2020, 06:27
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Hi Sebastian,

Thank you very much for your explanation. I found the link very helpful too and I now understand why the gap exists!

Thanks again!

Best regards,
M
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