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-   -   Vortex induced vibration simulation using pimpleDyMFoam (https://www.cfd-online.com/Forums/openfoam-post-processing/133377-vortex-induced-vibration-simulation-using-pimpledymfoam.html)

Amit-1911 April 14, 2014 08:44

Vortex induced vibration simulation using pimpleDyMFoam
 
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.:confused:

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?


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