In-line and transverse forces on smooth and rough cylinders in oscillatory flow at high Reynolds numbers
MetadataShow full item record
This report presents the results of an extensive experimental investigation of the in-line and transverse forces acting on smooth, sand-roughened, and marine-roughened circular cylinders (k/D = 1/50) of identical length-to-diameter ratio (L/D = 2) placed in a sinusoidally oscillating flow. The drag, inertia, and the maximum force coefficients have been determined through the use of the Fourier analysis. The transverse force (lift) has been analysed in terms of its root-mean-square value. In addition, the amplitude of the first ten harmonics have been determined. The results are presented in both graphical and tabulated form in terms of the Reynolds number, Keulegan-Carpenter nunber, relative roughness and the frequency parameter B (= Re/K).
NPS Report NumberNPS69-86-003
Showing items related by title, author, creator and subject.
Rhoads, Jason L. (2004);This work investigates the fundamental relationships of wave loading on cross deck structures for trimaran vessels. In contrast with a monohull ship, trimaran vessels experience several possible structural loading cases ...
Sarpkaya, Turgut; Collins, Neil J.; Evans, Steven R. (Offshore Technology Conference, 1977-05);This paper presents the results of an extensive experimental investigation of the in-line and transverse forces acting on sand-roughened circular cylinders placed in oscillatory flow at Reynolds numbers up to 1,500,000; ...
Henning, Peter John (Monterey, California. Naval Postgraduate School, 1977-03);The transverse forces acting on smooth and sand-roughened circular cylinders immersed in an harmonically oscillating flow have been measured using a recently constructed U-shaped water tunnel. The lift coefficients were ...