How I can implement helical motion?

night-hawk · August 10, 2021, 05:38

Hi everyone,

I am trying to do a simulation in which I want helical motion of wing (rotation about z axis and also moving in z direction). What is best was to implement this?

tomf · August 11, 2021, 04:25

Hi,

Probably you would want to look at multiMotion and then have combinations of rotatingMotion and linearMotion. There are various options that include oscillation or being driven by external forces.

You may need to use overset mesh as well, depending on how large the translation becomes. I would start with looking at some tutorials:

Code:

grep -r Motion $FOAM_TUTORIALS

To find some relevant ones. Before running the solver you can test your mesh motion with moveDynamicMesh.

Good luck,
Tom

frantov · August 30, 2021, 18:15

careful, overset mesh is only available in openfoam.com, (not org)

August 10, 2021, 05:38	How I can implement helical motion?	#1
night-hawk Member Ashutosh Join Date: Jul 2021 Location: India Posts: 75 Rep Power: 4	Hi everyone, I am trying to do a simulation in which I want helical motion of wing (rotation about z axis and also moving in z direction). What is best was to implement this?

August 11, 2021, 04:25		#2
tomf Senior Member Tom Fahner Join Date: Mar 2009 Location: Breda, Netherlands Posts: 634 Rep Power: 32	Hi, Probably you would want to look at multiMotion and then have combinations of rotatingMotion and linearMotion. There are various options that include oscillation or being driven by external forces. You may need to use overset mesh as well, depending on how large the translation becomes. I would start with looking at some tutorials: Code: grep -r Motion $FOAM_TUTORIALS To find some relevant ones. Before running the solver you can test your mesh motion with moveDynamicMesh. Good luck, Tom night-hawk likes this.

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August 30, 2021, 18:15		#3
frantov Member Francisco T Join Date: Nov 2011 Location: Melbourne, Australia Posts: 64 Blog Entries: 1 Rep Power: 14	careful, overset mesh is only available in openfoam.com, (not org)