Flexible Dual Membrane Wave Barrier
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 124, Issue 5
Abstract
This paper discusses the performance of a wave barrier consisting of two vertical flexible membranes spaced at a fixed distance apart. The interaction of the membrane system with uniform incident water waves is investigated within the context of two-dimensional linear wave theory. The membranes extend the entire water depth and are tensioned and pinned at both the surface and the seabed. Analytic solutions are developed using eigenfunction expansions for the velocity potential and linear membrane theory. It is found that the transmission and reflection characteristics are highly sensitive to the membrane spacing and tension. These parameters offer the opportunity to tune the barrier system for achieving low energy transmission at a lower membrane tension as compared with a single membrane, and to reflect waves over selected frequency bands. Additional reductions in the transmitted wave energy from viscoelastic dissipation within the membrane are found to be small.
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Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 124 • Issue 5 • September 1998
Pages: 264 - 271
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Sep 1, 1998
Published in print: Sep 1998
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