[Gmsh] Gmsh Sinusoidal Tube

[Feola, Andrew J]

Hello,

I am trying to create a geometry that has a sinusoidal hollow tube similar to what is shown in the image attached.  I can create the straight tube in GMSH using lines and rotation around the center axis but I can not quite figure out how to make the sinusoidal geometry.  Is there a way to rotate around a center line? Or another method to create a volume with surfaces of a hollow tube with a sinusoidal shape?  

Thank you,
Andrew
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