Vortex induced vibration simulation using pimpleDyMFoam

Amit-1911 · April 14, 2014, 08:44

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, 02:16

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

April 14, 2014, 08:44	Vortex induced vibration simulation using pimpleDyMFoam	#1
Amit-1911 New Member Amit Dhage Join Date: Sep 2013 Location: India Posts: 15 Rep Power: 13	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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
3-D VAWT simulation using pimpleDyMFOAM not working	Naruto	OpenFOAM Running, Solving & CFD	2	May 30, 2013 06:49
LES Delta wing vortex simulation	rafamusura	OpenFOAM Running, Solving & CFD	2	September 4, 2012 12:44
problem with vortex shedding simulation	Le Stanc	Main CFD Forum	6	November 1, 2006 14:08
"bit" phenomenon in Vortex Induced Vibration?	JOEY	Main CFD Forum	0	August 4, 2006 09:49
LES simulation of vortex shedding	Hans	Main CFD Forum	8	September 25, 2003 07:28

April 16, 2014, 02:16		#2
Amit-1911 New Member Amit Dhage Join Date: Sep 2013 Location: India Posts: 15 Rep Power: 13	Dear all, What is anchor and refAttachmentPt in pointDisplacement file for sixDoFRigidBodyMotionRestraint linearSpring for Dynamic Mesh?