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How to add both rotation and Translation simultaneously for a geometry.
Posted 10 oct. 2023, 11:23 UTC−4 Computational Fluid Dynamics (CFD), Modeling Tools & Definitions 1 Reply
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Hello，
Recently， I creat a geometry with helix shape. I need helix rotate with its central axis, so the rotation movement will be transformed into translation（forward） due to helical shape. Now with the Moving Mesh Interfaces， I can only realize the helix rotate with its central axis，but it not translation， only stay the original place and rotation.
In addition, I also try the prescribed deformation, with dx = cos(2pit1[Hz]) dy = sin(2pit1[Hz]) dz = t*1[m/s] But, this a whole tranlation without rotation with its central axis.
So, could u please give me some suggestions about how to apply both rotation and translation for a helix shape, and with its rotation with its axis， it can realize translate forward.
Thank you for your help and looking forward to your reply.
Best regards Hou
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Hou,
I think the expressions for the prescribed deformation are not complete. Shouldn't the x and y movement comprise the radius (e.g. sqrt(x^2 + y^2) and the z movement should comprise the pitch of the helix?
Cheers Edgar
-------------------Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com