The interaction between a solitary wave and a submerged semicircular cylinder

Cooker, Mark J.; Peregrine, D. H.; Vidal, C. R.; Dold, J. W.

doi:10.1017/s002211209000252x

Cited by 104 publications

(83 citation statements)

References 8 publications

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“…Most of the observations just reported qualitatively correspond to results obtained by Cooker et al (1990).…”

Section: Characteristics Of Wave Breakingsupporting

confidence: 87%

“…Sources of error in similar experiments made in this flume following an identical wave-generation procedure were also discussed by Cooker et al (1990).…”

Section: Fig 1 Definition Sketch For Experimental Setupmentioning

confidence: 91%

“…Solitary wave interaction with a submerged semicircular cylinder has also been studied by Cooker et al (1990), using an extension of Dold and Peregrine's (1986) model. Results showed a variety of behaviors, depending on wave height and cylinder size.…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of Solitary Wave Breaking Induced by Breakwaters

Grilli

Losada

Martín

1994

J. Waterway, Port, Coastal, Ocean Eng.

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ABSTRACT:Laboratory experiments are presented for the breaking of solitary waves over breakwaters. A variety of behaviors is observed, depending on both breakwater and incident wave height: for emerged breakwaters, waves may collapse over the crown, or break backward during rundown; and for submerged breakwaters, waves may break forward or backward, downstream of the breakwater. The limit of overtopping and wave transmission and reflection coefficients are experimentally determined. It is seen that transmission is large over submerged breakwaters (55-90%), and may also reach 20-40% over emerged breakwaters. Computations using a fully nonlinear potential model agree well with experimental results for the submerged breakwaters, particularly for the smaller waves (Hid < 0.4). For emerged breakwaters, computations correctly predict the limit of overtopping, and the backward collapsing during rundown.

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“…Most of the observations just reported qualitatively correspond to results obtained by Cooker et al (1990).…”

Section: Characteristics Of Wave Breakingsupporting

confidence: 87%

“…Sources of error in similar experiments made in this flume following an identical wave-generation procedure were also discussed by Cooker et al (1990).…”

Section: Fig 1 Definition Sketch For Experimental Setupmentioning

confidence: 91%

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Characteristics of Solitary Wave Breaking Induced by Breakwaters

Grilli

Losada

Martín

1994

J. Waterway, Port, Coastal, Ocean Eng.

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“…The singularity was not studied. The jet observed in the experiments was well reproduced by the boundary-element method described by Cooker et al [ 8 ]. To start the numerical simulations the singularity was smoothed out with the initial step-like free surface being approximated by a hyperbolic tangent.…”

Section: Introductionmentioning

confidence: 79%

The initial stage of dam-break flow of two immiscible fluids. Linear analysis of global flow

Yılmaz

Korobkin

Iafrati

2013

Applied Ocean Research

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a b s t r a c tTwo-dimensional impulsive flow of two immiscible fluids is studied within the potential flow theory. Initially the fluids of different depths and different densities are at rest and separated with a thin vertical plate. The plate is withdrawn suddenly and gravity-driven flow of the fluids starts. During the early stage the flow is described by the linear potential theory. Attention is paid to the motion of the interface between the fluids and the singular behaviour of the velocity field at the triple point, where the free surfaces of the fluids and the interface meet each other. The linear problem is solved by the Fourier series method. Local analysis of the flow field close to the triple point reveals that the singularity of the flow depends on the ratio of the fluid densities with a coefficient dependent on both the density ratio and the shape of the flow region. The flow velocity is also log-singular at the point where the interface meets the bottom. The intensity of this singularity depends on the density ratio. The latter singularity disappears when the densities of the fluids are equal. The Fourier series solution supplemented by the singularity analysis at the corner points resolves these initial singularities. Comparisons with solutions obtained through the boundary element method are established for validation purposes. The numerical analysis of the problem by the boundary element method is carried out and it compares quite well with the Fourier series solution. The singular flow field which leads to the jet formation at the initial instant has been observed by both methods. The problem of dam-break flow for the wet-bed case corresponds to the present problem with equal densities of the fluids. Comparisons with data available in literature are established in the case of fluids with the same density.

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“…Wave breaking has also been characterized by analyzing wave vortex parameters (Longuet-Higgins, 1982) and wave plunge distances (Smith and Kraus, 1991), with empirical and numerical methods (Vinje and Brevig, 1980;Cooker et al, 1990;Li, 2000;Khayyer et al, 2008).…”

Section: Figure Ii2mentioning

confidence: 99%

Mound Breakwater Design in Depth-Limited Breaking Wave Conditions

Gamboa¹,

Piedad²

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i Agradecimientos Esta tesis doctoral es el fruto de varios años de trabajo, pero su culminación no habría sido posible sin el apoyo y la ayuda de todas aquellas personas importantes que me rodean.A mi padre, por su dedicación y precocupación por mí. Porque sin él, probablemente no estaría escribiendo estas líneas.A mi madre, por su apoyo incondicional, su alegría y su capacidad de ponerse en el lugar del otro. Gracias por estar siempre a mi lado.A mis hermanos, Patricia y Pepe, a los que quiero con locura aunque siempre estemos de 'peleillas'.A mis amigos, porque a pesar de la distancia que nos separa, sois mi segunda familia.A mis compañeros del LPC y departamento, Ainoha, Gloria, Quique, Vicente, Guille, Tomás, César, Pepe, Ana, Esther, Jose Alberto, Joaquín, Miguel…por la ayuda prestada.A Jorge, por todo. Por sus ánimos, su confianza, su paciencia y su ayuda. Porque siempre has estado ahí sin esperar nada a cambio.A mi director de tesis, Josep, quien me ha transmitido su pasión por la ingeniería marítima. Gracias por haberme ofrecido la posibilidad de trabajar contigo, por la ayuda, la confianza y la disponibilidad mostrada todos estos años.Al Ministerio de Educación, Cultura y Deporte, por la financiación brindada a través del programa de Formación de Profesorado Universitario (FPU 13/01872) para la realización de esta tesis doctoral.Al Ministerio de Economía y Competitividad, por la financiación del proyecto ESCOLIF (BIA2012-33967).A Debra Westall, por revisar este documento.iii Resumen El manto principal de los diques en talud suele estar formado por escollera natural o elementos prefabricados de hormigón; su función es resistir la acción del oleaje. Una revisión del estado del arte pone de manifiesto que son numerosas las fórmulas existentes para el diseño de mantos derivadas de ensayos físicos a escala reducida con oleaje sin rotura por fondo. Sin embargo, la mayoría de diques en talud se construyen en la zona de rompientes con oleaje limitado por fondo, donde las ecuaciones de diseño habituales no son del todo válidas. En esta tesis doctoral se analiza la estabilidad hidráulica de mantos bicapa de escollera, a partir de ensayos a escala reducida con pendiente de fondo m=1/50. En base a los resultados obtenidos de los ensayos físicos, se propone una nueva relación potencial para el diseño de mantos de escollera en condiciones de oleaje limitado por fondo, válida para taludes con cotα=1.5, números de estabilidad 0.98≤Hm0/(ΔDn50)≤2.5, y profundidades relativas a pie de dique de 3.75≤hs/(ΔDn50)≤7.50.Cuando el manto principal está formado por elementos de hormigón, es habitual construir una berma de pie que proporciona apoyo a los elementos del manto y, en su caso, colabora en la protección de la zona inferior del dique contra la socavación. Dicha berma suele construirse con escollera natural y su peso está condicionado al de los elementos del manto en el caso de no haber rotura por fondo. El peso de los elementos de la berma de pie suele ser un orden de magnitud inferior al peso de las unidades del manto; ...

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The interaction between a solitary wave and a submerged semicircular cylinder

Cited by 104 publications

References 8 publications

Characteristics of Solitary Wave Breaking Induced by Breakwaters

Characteristics of Solitary Wave Breaking Induced by Breakwaters

The initial stage of dam-break flow of two immiscible fluids. Linear analysis of global flow

Mound Breakwater Design in Depth-Limited Breaking Wave Conditions

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