Accession Number:

AD0422182

Title:

THEORETICAL AND EXPERIMENTAL INVESTIGATION OF WAVE ENERGY DISSIPATORS COMPOSED OF WIRE MESH SCREENS,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE HYDRODYNAMICS LAB

Personal Author(s):

Report Date:

1963-08-01

Pagination or Media Count:

66.0

Abstract:

Wave energy dissipators composed of vertical wire mesh screens aligned normal to the direction of wave propagation were analyzed theoretically and tested. The transmission coefficients of the wave energy dissipators were expressed as a function of number and size of screens and of incident wave steepness. Three energy dissipators made of galvanized wire mesh screens with four mesh per inch, and one dissipator made of bronze wire mesh screens with sixteen mesh per inch were tested for deep water waves. The experimental transmission coefficients which varied from 0.14 to 0.92 were in good agreement with the analytical values. The reflection coefficient of the wave energy dissipator when placed in a standing wave system was empirically expressed as the 52 power of the transmission coefficient. In the course of the experiment, the dynamic response of the wave gage was tested by forcing the wave gage to oscillate mechanically in still water. The error involved in the measurement of wave height is estimated as within 5. In addition, two tables of wave length, celerity, and relative depth for a given wave period in seconds and water depth in feet are compiled as appendices. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE