A circular cylinder elastically mounted to have equal flexibility in all lateral directions was exposed to cross (transverse) flow of water. The amplitudes and frequencies of flow-induced vibrations were measured as a function of flow velocity. Resonance-type responses were observed when the vortex-shedding frequency coincided with 50% (Condition A), and 100% (Condition B) of the natural frequency of the cylinder. As expected, Condition B resulted in large-amplitude vibrations in the lift (transverse to flow) direction. However, water excitation at the lower flow velocity of Condition A, which is generally considered unimportant for airflow exposures, resulted in drag (parallel to flow) direction vibrations of moderately large amplitudes. It appears that design applications subject to waterflow under exposure Condition A warrant individual investigation.

  • Supplemental Notes:
    • Presented at ASME meeting, Sept. 9-12, 1973.
  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  United States  10016-5990
  • Authors:
    • Halle, H
    • Lawrence, W P
  • Publication Date: 1973-9

Media Info

  • Features: References;
  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00051825
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: ASME #73-DET-68 Paper
  • Files: TRIS
  • Created Date: Mar 25 1974 12:00AM