Acculution ApS
Certified Consultant
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Posted:
3 years ago
10 févr. 2022, 04:13 UTC−5
This is how it will always be visualized. The underlying elements may have a higher order than linear (https://mecheng.iisc.ac.in/suresh/me237/feaNotes/Chapter4.pdf), but they will not be circular arcs internally. It does not really matter; what you need to ensure that you geometry is well resolved and that the physics field is also well resolved.
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René Christensen, PhD
Acculution ApS
www.acculution.com
info@acculution.com
This is how it will always be visualized. The underlying elements may have a higher order than linear (https://mecheng.iisc.ac.in/suresh/me237/feaNotes/Chapter4.pdf), but they will not be circular arcs internally. It does not really matter; what you need to ensure that you geometry is well resolved and that the physics field is also well resolved.
Jeff Hiller
COMSOL Employee
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Posted:
3 years ago
10 févr. 2022, 10:00 UTC−5
Updated:
3 years ago
10 févr. 2022, 13:50 UTC−5
Hello Bernardo,
By default, elements are isoparametric, meaning that the interpolation order used for the geometry is the same as the interpolation order for the variables solved for. By default the edges of mesh elements are displayed as straight lines (to render faster, I believe), as you've noticed. In the more recent versions of the software (at least since 5.6), it is possible to create mesh plots that better represent the true shape of the elements; see the attached image where you can clearly see where the nodes on the outer edges are located (note how I adjusted the inputs in the Settings window to get this plot) . See also https://www.comsol.com/release/5.6/geometry-and-mesh for a 3D example.
Best regards,
Jeff
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Jeff Hiller
Hello Bernardo,
By default, elements are isoparametric, meaning that the interpolation order used for the geometry is the same as the interpolation order for the variables solved for. By default the edges of mesh elements are displayed as straight lines (to render faster, I believe), as you've noticed. In the more recent versions of the software (at least since 5.6), it is possible to create mesh plots that better represent the true shape of the elements; see the attached image where you can clearly see where the nodes on the outer edges are located (note how I adjusted the inputs in the Settings window to get this plot) . See also https://www.comsol.com/release/5.6/geometry-and-mesh for a 3D example.
Best regards,
Jeff