DIFFRACTION OF WATER WAVES BY A SUBMERGED CIRCULAR CYLINDER

The author discusses the physical phenomenon which occurs when a train of regular harmonic waves passes over a submerged circular cylinder. A discrepancy between the theoretical and experimental results is found when the cylinder is close to the water surface. The linearized potential theory gives a good description of the phenomenon in case the cylinder is well submerged. The phase angle between the incident waves and transmitted waves is found to be very sensitive with respect to the change of incident-wave slope. This effect may be related to the change of the proportion of the energy propagation that passed over the top and below the cylinder. A further study of this effect is recommended.

• Supplemental Notes:
  • Also pub. as California Univ., Berkeley, Coll. of Engineering. Rept. no. NA-73-4.
• Corporate Authors:

  University of California, San Diego

  Institute of Marine Resources
  La Jolla, CA  United States  92037
• Authors:
  • Chiu, H
• Publication Date: 1973-7

Media Info

• Pagination: 40 p.

Subject/Index Terms

• TRT Terms: Cylindrical bodies; Diffraction; Dynamic tests; Dynamometers; Equipment tests; Excitation; Force; Free surface; Hydrodynamics; Kinetic energy; Potential theory; Traffic signal phases; Underwater structures; Water waves; Wave motion; Waves
• Identifier Terms: National Sea Grant Program
• Uncontrolled Terms: Phase angle
• Old TRIS Terms: Free surface effects; Sea grant program; Submerged bodies; Submerged objects; Test equipment; Wave forces on structures; Wave transmission coefficient
• Subject Areas: Bridges and other structures; Hydraulics and Hydrology; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00051703
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: UC-IMR-74-2
• Contract Numbers: NOAA-2-35208
• Files: TRIS
• Created Date: Mar 12 1974 12:00AM