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How to draw a coaxial closed pipe

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Hello,

I am trying to draw a 1D coaxial closed pipe geometry that consists of lines and arcs (portion of a circle). From my understanding, using the Bézier Polygon would be appropriate for this.

However, I am having a hard time figuring out how to define the arcs. The cubic Bézier node in COMSOL requires four control points and four weights as inputs. For the control points I put in the two endpoints 1 and 4 coordinates values (0,0,0) and (0,0,L), as for the two control points 2 and 3 corrdinate values (0,0,1) and (0,0,-1). For the weight point i left the defaults values of 1. Can anyone help validate if correct. Thank you for your help.


1 Reply Last Post 07.05.2024, 12:43 GMT-4
Robert Koslover Certified Consultant

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Posted: 7 months ago 07.05.2024, 12:43 GMT-4

I don't understand how anything can be both one dimensional (i.e., "1D") and coaxial. Can you draw, perhaps using pencil and paper, a picture of what you mean, and post it to the forum?

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
I don't understand how anything can be both one dimensional (i.e., "1D") and coaxial. Can you draw, perhaps using pencil and paper, a picture of what you mean, and post it to the forum?

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