ACTIVE WATER-WAVE ABSORBERS
The problem considered is that of absorbing two-dimensional water waves in a channel by means of a moving termination at the end of the channel. The problem is formulated for a semi-infinite channel and solutions are determined according to a linearized theory. The motion of the termination that is needed for absorption is determined in the form of a linear operation on the measured surface elevation at a fixed point in the channel so a self-actuating wave-absorbing system can be devised. A theoretical method of studying the stability of such a system is presented. A system of this type was built and experiments with it are described. Wave absorption is demonstrated both for monochromatic waves and for wave pulses. The absorption of a wave pulse is compared with the absorption of the same pulse by a fixed beach making a 10 degrees angle with the horizontal direction.
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Corporate Authors:
Cambridge University Press
200 Euston Road
London NW1, England -
Authors:
- Milgram, J E
- Publication Date: 1970-7-30
Media Info
- Pagination: p. 845-59
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Serial:
- Journal of Fluid Mechanics
- Volume: 42
- Issue Number: Pt 4
- Publisher: Cambridge University Press
Subject/Index Terms
- TRT Terms: Water waves; Wave motion
- Old TRIS Terms: Wave absorbers
- Subject Areas: Hydraulics and Hydrology; Marine Transportation; Terminals and Facilities;
Filing Info
- Accession Number: 00032146
- Record Type: Publication
- Source Agency: Engineering Index
- Files: TRIS
- Created Date: Apr 21 1972 12:00AM