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Review of interference-induced oscillations in flow past two parallel circular cylinders in various arrangements
AbstractA wide variety of interference-induced oscillations of two parallel circular cylinders have occured 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.
Review of interference-induced oscillations in flow past two parallel circular cylinders in various arrangements
AbstractA wide variety of interference-induced oscillations of two parallel circular cylinders have occured 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.
Review of interference-induced oscillations in flow past two parallel circular cylinders in various arrangements
Zdravkovich, M.M. (author)
Journal of Wind Engineering and Industrial Aerodynamics ; 28 ; 183-199
1988-01-01
17 pages
Article (Journal)
Electronic Resource
English
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