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Erschienen in:
2019 | OriginalPaper | Buchkapitel
Vibration Initiation of a Cylinder in the Wake of Another
verfasst von : B. Qin, Y. Liu, Md. Mahbub Alam, Y. Zhou
Erschienen in: Fluid-Structure-Sound Interactions and Control
Verlag: Springer Singapore
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Abstract
This paper presents the cross-flow induced vibration response of a both-end-spring-mounted circular cylinder (diameter D) placed in the wake of a rigid circular cylinder of a smaller diameter d. The cylinder diameter ratio d/D and the spacing ratio L/d are 0.4 and 2.0, respectively, where L is the distance between the center of the upstream cylinder to the forward stagnation point of the downstream cylinder. The focus is given to investigate how the initiation of the vibration occurs, gaining insight into physics in the transition period where the cylinder starts to vibrate. The transition period can be divided into pre-initial, initial and late transitions. The role of added mass, added damping and work done in the transition process is studied in detail.