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A Study on Stream-Wise Oscillation of Cylinder Arrays: Effect of Pitch Ratio

[+] Author Affiliations
Tomomichi Nakamura, Takafumi Yoshikawa, Taku Yoshimura, Hironobu Kondo

Osaka Sangyo University, Daito, Osaka, Japan

Paper No. PVP2009-77134, pp. 165-172; 8 pages
  • ASME 2009 Pressure Vessels and Piping Conference
  • Volume 4: Fluid-Structure Interaction
  • Prague, Czech Republic, July 26–30, 2009
  • Conference Sponsors: Pressure Vessels and Piping
  • ISBN: 978-0-7918-4367-3 | eISBN: 978-0-7918-3854-9
  • Copyright © 2009 by ASME


The importance of the in-flow oscillation of a single cylinder in cross-flow has been spotlighted since an accident in a FBR-type reactor. However, the in-flow oscillation can be observed in tube arrays of heat exchangers. Previous reports show some interesting phenomena on the oscillation of cylinder arrays, which have a same pitch between cylinders. This paper shows the effect of the pitch ratio of a cylinder array on the characteristics of those phenomena, especially in in-flow direction, where every cylinder can move only in this direction. The motion of cylinders is measured by attached strain gages and by a high-speed digital video camera.

Copyright © 2009 by ASME



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