IN-LINE AND TRANVERSE FORCES ON CYLINDERS IN OSCILLATORY FLOW AT HIGH REYNOLDS NUMBERS

The design of structures for the marine environment requires the prediction of the forces generated by waves and currents. This paper presents the results of an extensive experimental investigation of the in-line and transverse forces acting on smooth and rough circular cylinders placed in oscillatory flow at Reynolds numbers up to 700,000, Keulegan-Carpenter numbers up to 150, and relative roughness from 0.002 to 0.02. The drag and inertia coefficients have been determined through the use of the Fourier analysis and the least squares method. The transverse force (lift) has been analyzed in terms of its maximum, semi peak-to-pe and root-mean-square values. In addition, the frequency of vortex shedding and the Strouhal number have been determined.

• Supplemental Notes:
  • Offshore Technology Conference 8th Annual, Proceedings, Houston, Texas, May 3-6, 1976.
• Corporate Authors:

  Offshore Technology Conference

  6200 North Central Expressway
  Dallas, TX  United States  45206
• Authors:
  • Sarpkaya, T
• Conference:
  • Offshore Technology Conference 8th Annual, Proceedings, Houston, Texas, May 3-6, 1976.
• Publication Date: 1976-5

Media Info

• Features: References;
• Pagination: p. 95-108

Subject/Index Terms

• TRT Terms: Force; Lift drag ratio; Roughness; Vortex shedding; Waves
• Old TRIS Terms: Wave forces on structures
• Subject Areas: Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00144296
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: V2, OTC 2533 Proceeding
• Files: TRIS
• Created Date: Jan 16 1977 12:00AM