Vibration and stability of two tubes in crossflow

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Description

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 crossflow can be predicted.

Physical Description

31 p.

Creation Information

Zhu, S.; Chen, S.S. & Cai, Y. August 1, 1997.

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Description

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 crossflow can be predicted.

Physical Description

31 p.

Notes

OSTI as DE97008047

Source

  • Other Information: PBD: [1997]

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  • Other: DE97008047
  • Report No.: ANL/ET/PP--87160
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/510376 | External Link
  • Office of Scientific & Technical Information Report Number: 510376
  • Archival Resource Key: ark:/67531/metadc697433

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Creation Date

  • August 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Dec. 16, 2015, 4:51 p.m.

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Zhu, S.; Chen, S.S. & Cai, Y. Vibration and stability of two tubes in crossflow, report, August 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc697433/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.