Flow-Induced Vibration of Bluff Bodies. Strouhal Number Effect on Synchronized Vibration Range of a Circular Cylinder in Cross Flow.

Kawamura, Tsutomu; Nakao, Toshitsugu; Hayashi, Masaaki; Murayama, Kouichi

doi:10.1299/jsmeb.44.729

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Cylinder Motion Under Alternative Vortex Condition1

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2006

2018

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Cited by 5 publications

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“…These characteristics of cross-flow and in-line oscillations are coincident with the two-dimensional calculation by Mittal and Kumar (8) . The relation between the cylinder locations in cross-flow (4), (9) , and are similar to the Lissajou shown in Fig. 6.…”

Section: Cylinder Motion Under Alternative Vortex Conditionsupporting

confidence: 62%

Numerical Simulation of In-Line and Cross-Flow Oscillations of a Cylinder

Watanabe

Kondo

2006

JSME international journal. Ser. B, Fluids and thermal engineer

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The flow-induced vibration of a circular cylinder is simulated numerically. The finite element method is used to solve the three-dimensional incompressible Navier-Stokes equations, and the flow field is coupled with the cylinder motion. The oscillation of the cylinder in the in-line direction is shown when the reduced velocity, U r , is smaller than 4.0. Symmetric vortices are seen for U r ≤ 2.5 and alternative vortices appear for U r ≥ 2.9, while the cylinder motion is damped at around U r = 2.6. It is found that the cross-flow oscillation of the cylinder is dominant under the alternative vortex condition. The drag and lift coefficients increase and the vortex field become finer both in space and time by the cross-flow oscillation.

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Section: Cylinder Motion Under Alternative Vortex Conditionsupporting

confidence: 62%