Abstract
A wide variety of interference-induced oscillations of two parallel circular cylinders have occurred in engineering applications. The flow interference depends on spacing between the two cylinders and orientation relative to the free stream. Three categories of flow interference are proposed: proximity, wake and the combination of both. The oscillations caused by jet-switch, gap-flow-switch, wake-displacement and wake-galloping are discussed. These interference-induced oscillations are related to the reduced velocity, mass and structural damping (combined in a Scruton number) and to the number of degrees of freedom of the two cylinders. The reliable mathematical modelling is developed only for the wake galloping. Most means for suppressing vortex shedding are ineffective for the flow interference excitations.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
