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http://dx.doi.org/10.3795/KSME-B.2012.36.1.055

Flow-induced Vibration Characteristics of Two Circular Cylinders in a Side-by-Side Arrangement and the Vibration Mechanism  

Kim, Sang-Il (Dept. of Mechanical Engineering, Kangwon Nat'l Univ.)
Lee, Seung-Chul (Dept. of Fire Protection Engineering, Kangwon Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.36, no.1, 2012 , pp. 55-60 More about this Journal
Abstract
This experimental study investigated the characteristics of flow-induced vibration of two elastically supported circular cylinders in a side-by-side arrangement. In particular, the characteristics of the flow-induced vibration of the two cylinders are investigated by changing the flow speed at each spacing ratio L/D (L is the space between two cylinders and D is the diameter of the cylinder). To clarify the mechanism generating the flow-induced vibration of the cylinders, the flow patterns around the two vibrating cylinders are also investigated using a flow visualization test that reproduces the flow-induced vibration of the cylinders with a forced vibration apparatus. As a result, it is clarified that the flow-induced vibration characteristics of the two cylinders arranged side-by-side switch among four patterns as the flow between the two cylinders is switched. Among the three arrangements considered (tandem, staggered, and side-by-side), the arrangement that generates flow-induced vibration of the two cylinders most easily is the side-by-side arrangement.
Keywords
Circular Cylinder; Flow-Induced Vibration; Side-by-Side Arrangement; Visualization; Switching Flow;
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