Written in English
Thesis (Ph.D.) - Loughborough University, 1999.
|Statement||by Niall David McLean.|
The linearized theory of water waves is used to study the diffraction of an incident wave by a gap in a permeable breakwater. Under the assumption that the wavelength is much greater than. Water wave diffraction by segmented permeable breakwaters Author: geometry and spacing of segments as well as depending on the the characteristics of the incident wave field. To explore the influence of these factors on the performance of these breakwaters, the diffraction by three related structures have been considered:a periodic array. The linearized theory of water waves is used to examine the diffraction of an incident wave by a permeable breakwater that consists of a number of distinct elements. Under the assumption that the wavelength is much greater than the thickness, each element is replaced by a thin structure and the permeability is modeled by a suitable boundary condition applied on its surface. The diffracted wave Cited by: water-wave diffraction through a breakwater gap may be most directly approached. The first mode of attack, which may be attributed to Pen ney and Price (1],2 involves a solution by Sommerfeld (2] for diffraction of light waves by a semiinfinite screen, or a half plane. The procedure is extended by superposition to a breakwater with a Size: 3MB.
Diffraction is an important factor in the determination of the distribution of wave energy within a harbor, and therefore is of importance in harbor design. Previous investigations in this field have made use of Sommerfeld's solution of the diffraction of waves by a semiinfinite screen to obtain results for semiinfinite breakwaters, and by superposition, approximate results for continuous Cited by: The wave diffraction by a semiinfinite porous wall is then studied by the boundary-layer method, in which; the outer approximation is formulated by virtue of the reduced two-dimensional : Xiping Yu. Design aspects of breakwaters and sea defences Jentsje van der Meer1 Abstract As a keynote lecture this paper does not focus on one subject, but treats four main aspects to some depth, including new not yet published items. The first item is on definition of design wave climate and Size: 2MB. Groynes, breakwaters and artificial reefs () A groyne is a shore protection structure built perpendicular to the shoreline of the coast (or river), over the beach and into the shoreface (the area between the nearshore region and the inner continental shelf), to .
Water wave diffraction by segmented permeable breakwaters. geometry and spacing\ud of segments as well as depending on the the characteristics of the incident wave field. To\ud explore the influence of these factors on the performance of these breakwaters, the diffraction\ud by three related structures have been considered:a periodic Author: Niall D. McLean. This paper presents a theoretical model to examine oblique wave diffraction by a detached breakwater system consisting of an infinite row of regularly-spaced thin, impermeable structures located in water of uniform by: Wave Reflection at Submerged Breakwaters: /ch Several types of structures are used in Coastal Engineering with the aim of preventing shoreline erosion, such as groynes, detached breakwaters, submergedAuthor: Alberte Castro Ponte, Gregorio Iglesias, Francisco Taveira Pinto, Rodrigo Carballo. The method of fundamental solutions (MFS) and domain decomposition method (DDM) are employed to solve the water-wave diffraction by a thin porous vertical breakwater of semi-infinite extent. Based on the linearized theory of water waves, the problem can be reduced to a boundary value problem with degenerate by: 7.