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RESEARCH PAPERS

Vibration and Stability of Two Tubes in Cross-Flow

[+] Author and Article Information
S. Zhu, S. S. Chen, Y. Cai

Energy Technology Division, Argonne National Laboratory, Building 335, 9700 S. Cass Avenue, Argonne, IL 60439

J. Pressure Vessel Technol 119(2), 142-149 (May 01, 1997) (8 pages) doi:10.1115/1.2842275 History: Received February 19, 1996; Revised March 08, 1996; Online February 11, 2008

Abstract

Two tubes in tandem and normal to flow were studied on the basis of the unsteady-flow theory. Motion-dependent fluid forces were measured in a water channel, and the pitch-to-diameter ratio was 1.35. From the measured fluid forces, fluid damping and stiffness were calculated as a function of reduced flow velocity and several Reynolds numbers. Once the fluid-damping and fluid-stiffness coefficients are known, coupled vibration and stability of the two tubes in cross-flow can be predicted.

Copyright © 1997 by The American Society of Mechanical Engineers
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