RESONANT RESPONSE OF HARBOURS: AN EQUIVALENT-CIRCUIT ANALYSIS
The surface-wave response is considered of a harbour to a prescribed, incident wave in an exterior half-space on the hypotheses of linearized, shallow-wave theory, an ideal fluid, and a narrow mouth. It appears worthwhile to invoke the equivalent-circuit techniques that have proved so efficient in attacking analogous problems in acoustics and electromagnetic theory. These techniques offer significant advantages in practice: (i) the sub-problems of external radiation, channel coupling, and internal resonance may be attacked separately; (ii) the equivalent-circuit parameters may be expressed as homogeneous, quadratic forms that may be simply approximated without solving the complete boundary-value problem; (iii) observed values (including those from model experiments) of dominant parameters, such as resonant frequencies, may be incorporated in preference to, or in place of, theoretical values; (iv) empirically determined dissipation parameters (resistances) may be incorporated; (v) analogue computation, both conceptual and electrical, may be invoked to expedite understanding of the resonant response. (Author)
-
Supplemental Notes:
- Revision of Report dated 27 Apr 70. Published in Jul of Fluid Mechanics, V46, Pt 2, pp241-265, 1971
-
Corporate Authors:
University of California, La Jolla
La Jolla Institute of Geophysics and Planetary Physics
San Diego, CA United States -
Authors:
- Miles, J W
- Publication Date: 1970-9-16
Media Info
- Pagination: 26 p.
Subject/Index Terms
- TRT Terms: Force; Rayleigh waves; Waves
- Old TRIS Terms: Surface wave effects; Wave effects; Wave forces on structures
- Subject Areas: Marine Transportation; Terminals and Facilities;
Filing Info
- Accession Number: 00019401
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: Reprint
- Contract Numbers: N00014-69A-4200-6005
- Files: TRIS
- Created Date: Nov 19 1973 12:00AM