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Field of normal vectors on boundary

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Old   July 14, 2021, 09:12
Default Field of normal vectors on boundary
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Hi everybody!

I'm trying to get a field of normal vectors(or area vectors) to boundary faces from mesh and then scalar multiply it by some other vector to get information about the angle between vectors from that field and my own vector.

There is a method
that returns cell face area vectors from mesh like
but I can't find any way to scalar multiply it by vector to get scalar field only on boundary faces.
Are there any ideas how this can be done?
Thank you!
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boundary, normal vector

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