A NOTE ON THE DECAY OF BODY-INDUCED HYDRODYNAMIC DISTURBANCES IN A TOWING TANK

The decay characteristics of disturbances generated from towing an axisymmetric body in a towing tank are estimated. The intensities of the mean velocity defect in a turbulent wake, wake turbulence, and a turbulent two-dimensional line vortex are estimated to be respectively of the order of .01 x U and .001 x U at 32 and 320 seconds, after the passage of a body which is 20 inches (50 cm) in diameter and towed at U = 50 ft.sec (15 m/s). Sample calculations of the influence of flow disturbances in altering the body's axisymmetric pressure distribution are included. (Author)

  • Corporate Authors:

    David Taylor Naval Ship R&D Center

    Ship Performance Department
    Bethesda, MD  USA  20084
  • Authors:
    • Chang, M S
  • Publication Date: 1977-6

Media Info

  • Pagination: 14 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00167161
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: SPD-781-01 Final Rpt.
  • Files: TRIS
  • Created Date: Nov 23 1978 12:00AM