Accession Number : ADA136627

Title :   Performance Comparison of a Hydraulic Breakwater Attenuating Random and Monochromatic Waves.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Basile,D G

PDF Url : ADA136627

Report Date : Dec 1983

Pagination or Media Count : 25

Abstract : Based on work performed by various engineers and scientists, (Straub, et al; Taylor; Williams; Horikawa; etc.), small scale experiments were performed to compare the performance of a hydraulic breakwater for attenuation of various random wave spectra to monochromatic waves. Previous experiments were conducted in the presence of monochromatic waves and wind generated waves, the wind generated waves being closer to natural occurrences than monochromatic waves. Four wave spectra, Darbyshire, Pierson, ITTC and Jonswap, were generated against a breakwater set at a fixed depth and fixed jet area per foot (maximum mechanically attainable) while varying the flowrate. The results indicate a much larger discharge requirement for the attenuation of random waves to the same degree as monochromatic waves of similar magnitude. This is due to the fact that the breakwater does not work as well on the longer waves of the spectrum as it does on the shorter waves. (Author)

Descriptors :   *Breakwaters, *Water waves, Hydraulic equipment, Water jets, Spectra, Random variables, Attenuation, Model tests, Hydraulic models

Subject Categories : Physical and Dynamic Oceanography
      Hydrology, Limnology and Potamology
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE