Vortex induced vibration simulation using pimpleDyMFoam

Amit-1911 · April 14, 2014, 07:44

Hi all,

I am simulating a 2D flow case of circular cylinder undergoing VIV using pointDisplacement in that i am using uncoupledSixDofRigidBodyDisplacement as a displacement type and allowing the cylinder to translate only in transverse direction to flow.
I fail to understand why my cylinder oscillates for initial few secs say 10 to 20s and after that it remains stationary, what may be the reason behind this?
And when i am simulating for 2DOF i.e. translation in inline and cross flow direction, cylinder displacement is same in both the direction which i think is not possible.
Can anybody guide me on this, i am very badly stuck on this for long time.

Thanks in advance!
Amit Dhage

Amit-1911 · April 16, 2014, 01:16

Dear all,
What is anchor and refAttachmentPt in pointDisplacement file for sixDoFRigidBodyMotionRestraint linearSpring for Dynamic Mesh?

April 14, 2014, 07:44	Vortex induced vibration simulation using pimpleDyMFoam	#1
Amit-1911 New Member Amit Dhage Join Date: Sep 2013 Location: India Posts: 15 Rep Power: 12	Hi all, I am simulating a 2D flow case of circular cylinder undergoing VIV using pointDisplacement in that i am using uncoupledSixDofRigidBodyDisplacement as a displacement type and allowing the cylinder to translate only in transverse direction to flow. I fail to understand why my cylinder oscillates for initial few secs say 10 to 20s and after that it remains stationary, what may be the reason behind this? And when i am simulating for 2DOF i.e. translation in inline and cross flow direction, cylinder displacement is same in both the direction which i think is not possible. Can anybody guide me on this, i am very badly stuck on this for long time. Thanks in advance! Amit Dhage

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April 16, 2014, 01:16		#2
Amit-1911 New Member Amit Dhage Join Date: Sep 2013 Location: India Posts: 15 Rep Power: 12	Dear all, What is anchor and refAttachmentPt in pointDisplacement file for sixDoFRigidBodyMotionRestraint linearSpring for Dynamic Mesh?