TRANSMISSION OF RANDOM WIND WAVES THROUGH PERFORATED OR POROUS BREAKWATERS

An analytical theory for random waves impinging on a dissipative breakwater is presented. From JONSWAP spectrum which was measured in depths including those of coastal engineering interest, it is pointed out that there can be cases where most of the energy is contained in the band of wavelengths long compared to depth. A linearized long-wave approximation is then used. For a perforated breakwater or a porous breakwater of the crib type, a stochastic equivalent linearization technique is applied to treat the quadratic loss at the breakwater. The random-wave scattering problems are then reduced to simple harmonic ones whose solutions are known. Statistical reflection and transmission coefficients are defined and numerical examples are given.

• Corporate Authors:

  Elsevier

  Radarweg 29
  Amsterdam,   Netherlands  1043 NX
• Authors:
  • Massel, S R
  • Mei, C C
• Publication Date: 1977-3

Media Info

• Pagination: p. 63-78
• Serial:
  • Coastal Engineering
  • Volume: 1
  • Issue Number: 1
  • Publisher: Elsevier

Subject/Index Terms

• TRT Terms: Breakwaters; Coastal engineering; Rayleigh waves; Transmissions; Water waves; Wave motion
• Old TRIS Terms: Wave transmission coefficient
• Subject Areas: Hydraulics and Hydrology; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00173117
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Apr 26 1978 12:00AM