Flexible Breakwaters.
Abstract
Several apparent advantages related to logistics are noted for a floating blanket type of transportable breakwater. However, thin surface covers are not very effective as wave barriers. (The known data on water-wave damping by shallow-draft barriers of many kinds are reviewed, and the data are reproduced in the appendix.) To more fully examine the potential of thin, flexible barriers, a supplementary process for reducing wave energy that has not been exploited heretofore--dissipation in a viscoelastic solid--is investigated; the linear theory is used to derive a formula which relates energy dissipation in an impervious viscoelastic blanket to wave height reduction. Numerical results for a high-damping rubber indicate that energy dissipation in a thin surface cover cannot satisfactorily supplement other processes and mechanisms if the wave period is greater than 2 or 3 seconds. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1974
- Accession Number
- AD0786369
Entities
People
- D. B. Jones
Organizations
- Naval Facilities Engineering Service Center