VORTEX SHEDDING AND RESISTANCE IN HARMONIC FLOW ABOUT SMOOTH AND ROUGH CIRCULAR CYLINDERS AT HIGH REYNOLDS NUMBERS
This report presents the results on an extensive experimental investigation of the in-line and transverse forces acting on smooth and rough circular cylinders placed in oscillatory water flow at Reynolds numbers up to 700,000, Keulegan-Carpenter numbers up to 150, and relative roughnesses 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-peak, and root-mean-square values. In addition, the frequency of vortex shedding and the Strouhal number have been determined.
Naval Postgraduate School1 University Circle
Monterey, CA USA 93943
- Sarpkaya, T
- Publication Date: 1976-2-2
- Pagination: 186 p.
- TRT Terms: Cylindrical bodies; Roughness; Vortex shedding
- Old TRIS Terms: Lifting forces on pilings
- Subject Areas: Marine Transportation; Terminals and Facilities;
- Accession Number: 00131610
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NPS-59SL76021 Intrm Rpt.
- Contract Numbers: NSF-AG-477
- Files: TRIS
- Created Date: Apr 21 1976 12:00AM