This paper concerns the nonlinear, higher-harmonic, wave-forces acting on a vertical surface-piercing cylinder. New laboratory data is presented which confirms that in the case a vertical cylinder, the diameter of which is large but not sufficiently large that the body lies within the linear diffraction regime, the second- and third-harmonic forces are not well described by existing models. This is particularly apparent when the incident waves are steep and have a relatively small wave period. Indeed, under these conditions the second-, third- and fourth-harmonic forces are shown to be comparable in size. This is clearly at odds with the results of a traditional perturbation expansion. An explanation for this lies in the nature of the scattered wave field, particularly the high-frequency waves identified by Sheikh & Swan [1]. The phasing of these scattered waves are, at least in part, dependent upon the motion of the fluid around the circumference of the cylinder and will not therefore be captured by a series solution based solely on the harmonics of the incident wave motion. The paper considers several test cases, fully exploring the correlation between the nonlinear forcing and the high-frequency scattering. The practical implications of these results are also addressed.
Skip Nav Destination
ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering
June 12–17, 2005
Halkidiki, Greece
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
0-7918-4196-0
PROCEEDINGS PAPER
Wave Forcing and Wave Scattering From a Vertical Surface-Piercing Cylinder Available to Purchase
Chris Swan,
Chris Swan
Imperial College London, London, UK
Search for other works by this author on:
Stephen Masterton,
Stephen Masterton
Imperial College London, London, UK
Search for other works by this author on:
Rizwan Sheikh,
Rizwan Sheikh
Noble Denton Europe, Ltd., London, UK
Search for other works by this author on:
Alessandra Cavalletti
Alessandra Cavalletti
Imperial College London, London, UK
Search for other works by this author on:
Chris Swan
Imperial College London, London, UK
Stephen Masterton
Imperial College London, London, UK
Rizwan Sheikh
Noble Denton Europe, Ltd., London, UK
Alessandra Cavalletti
Imperial College London, London, UK
Paper No:
OMAE2005-67158, pp. 571-580; 10 pages
Published Online:
November 11, 2008
Citation
Swan, C, Masterton, S, Sheikh, R, & Cavalletti, A. "Wave Forcing and Wave Scattering From a Vertical Surface-Piercing Cylinder." Proceedings of the ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 2. Halkidiki, Greece. June 12–17, 2005. pp. 571-580. ASME. https://doi.org/10.1115/OMAE2005-67158
Download citation file:
28
Views
Related Articles
Higher Order Wave Loading on Fixed, Slender, Surface-Piercing, Rigid
Cylinders
J. Offshore Mech. Arct. Eng (February,1991)
Second-Order Diffraction Forces on an Array of Vertical Cylinders in Bichromatic Bidirectional Waves
J. Offshore Mech. Arct. Eng (February,1995)
The Scattering of Shock Waves by Cylindrical Cavities in Liquids and Solids
J. Appl. Mech (March,1971)
Related Chapters
Physical Properties in the Persian Gulf
Proceedings of the 2010 International Conference on Mechanical, Industrial, and Manufacturing Technologies (MIMT 2010)
The Stirling Engine
Air Engines: The History, Science, and Reality of the Perfect Engine
Later Single-Cylinder Engines
Air Engines: The History, Science, and Reality of the Perfect Engine