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Normal velocity of cylindrical shell

Posted Nov 17, 2022, 3:00 a.m. EST Structural & Acoustics Version 6.0 3 Replies

尧 徐
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HI, I am tring to use the Acoustic-Solid Interaction, Frequency Domain Interface to calculate the acoustic radiation of the underwater cylindrical shell. But I can only find the XYZ component of the velocity in solid mechanics, so I want to know how to get the normal velocity of the cylindrical shell surface. Thanks.

3 Replies Last Post Nov 18, 2022, 4:15 a.m. EST
Mark Cops COMSOL Employee

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Posted: 2 years ago Nov 17, 2022, 5:33 p.m. EST

Hi 尧 徐,

In postprocessing, the normal velocity can be computed by taking the dot product of the normal vector (nx, ny, nz) with the velocity vector. Hope this helps.

Best,

Mark

Hi 尧 徐, In postprocessing, the normal velocity can be computed by taking the dot product of the normal vector (nx, ny, nz) with the velocity vector. Hope this helps. Best, Mark
尧 徐
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Posted: 2 years ago Nov 17, 2022, 11:16 p.m. EST

Hi Mark, Thanks for your reply! I will try it.

Hi Mark, Thanks for your reply! I will try it.
Henrik Sönnerlind COMSOL Employee

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Posted: 2 years ago Nov 18, 2022, 4:15 a.m. EST

If you are using 6.1, you can also use the new Local System Results feature to set up variables in, for example, a cylindrical system.

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Henrik Sönnerlind
COMSOL
If you are using 6.1, you can also use the new *Local System Results* feature to set up variables in, for example, a cylindrical system.

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