Water waves scattering by cylindrical dual porous floating breakwaters connected with a rectangular porous box and floating over an undulated seabed

Panduranga, Kottala; Koley, Santanu

doi:10.1007/s11012-021-01442-z

Cited by 8 publications

(4 citation statements)

References 60 publications

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“…with K = σ 2/ g, g is the acceleration constant. The interface BCs between regions 1, 2, 3, and 4 are expressed as in the equation ( [26]): where S p = S p1 ∪ S p2 ∪ S p3 (as shown in Fig. 1).…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…In which δ and s are the thickness of the screen and the gap between the centers of two neighboring slots ( [17]), respectively. Finally, the far-field BCs on S -∞ and S ∞ are given by the equations ( [26]):…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…The convergence of the numerical solutions based on the BEM depends on the panel size, which is used to discretize the boundaries of the domain. The panel size is expressed as ( [26,27])…”

Section: Convergence Studymentioning

confidence: 99%

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Oblique wave scattering by a rectangular porous floating breakwater with slotted screens over a sill-type seabed

Panduranga¹,

Koley²

2022

Int. J. CMEM

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In this work, oblique wave scattering by a rectangular porous breakwater with slotted screens floating over a sill-type seabed is examined within the frame of linear wave-structure interaction theory. The Sollitt and Cross model is used to analyze the fluid motion inside the rectangular porous breakwater. In addition, a quadratic pressure jump condition on the slotted screens is adopted to include the effect of wave height on wave attenuation by the slotted screens. The associated physical problem is handled using an iterative boundary element method. Finally, the scattering coefficients such as the reflection, transmission, energy loss coefficients, and wave forces acting on the rectangular porous structure are analyzed for different wave conditions. The time-dependent displacement profiles for the various instants of time are provided. Further, the influence of different geometries of sill-type bottoms on wave scattering is analyzed. The study concludes that the wave forces on the rectangular structure attain their maximum when the distance between the slotted screen and the porous structure is an integral multiple of the wavelength associated with the incident wave for different submergence drafts.

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Section: Mathematical Formulationmentioning

confidence: 99%

Section: Mathematical Formulationmentioning

confidence: 99%

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Oblique wave scattering by a rectangular porous floating breakwater with slotted screens over a sill-type seabed

Panduranga¹,

Koley²

2022

Int. J. CMEM

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“…(2) Assembling multiple structures. Usually, two or more individual breakwaters were connected together to form a new single breakwater, Williams et al [10] presented a pair of floating pontoon breakwaters of rectangular section; Yang et al [11] connected two rectangular pontoons with two horizontal plates; Cho et al [12] presented a dual vertical-flexible-membrane wave barrier; Panduranga and Koley [13] connected dual porous cylinders with a rectangular porous box; Zhou et al [14] investigated a pair of parallel parabolic arc pontoons. This kind of measure can reinforce the efficacy of wave attenuation compared to only one monomer.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the hydrodynamic characteristics of a Bragg breakwater with triple vertical plates

Luo

Zou

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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The hydrodynamic characteristics of a Bragg breakwater with triple vertical plates in monochromatic regular waves are experimentally studied. The two spacings between the every two adjacent plates are denoted by S 1 and S 2 respectively which are both wide enough for the necessary of Bragg reflection, and S 2 is equal or unequal to S 1. A series of experiments are carried out in the wave flume equipped with a piston-type wave generator, and the hydrodynamic performance are analysed with the variation of the spacing S 2, the plate draft d 1 and freeboard d 2, the wavelength L and the wave steepness H/L (H is the wave height). Special attention is paid to the effects of nonuniform spacings on the hydrodynamic performance and the characteristics of Bragg reflection. In addition, the comparisons between the fixed and the unrestrained positioning are also presented. The results show that the transmission coefficients of the two unequal spacings mostly are smaller than the two equal spacings, and the intensity and bandwidth of Bragg reflection are increased by the non-uniform spacings. Under the unrestrained positioning, the movements have no serious effects on the wave attenuation performances of the breakwater. Moreover, the trough of transmission coefficient occurs at the left of the primary Bragg reflection condition due to both of Bragg resonance and wave energy dissipation not just Bragg resonance.

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Hydrodynamic analysis of oscillating water column in the presence of seabed undulations

Srinu,

Venkateswarlu,

Vijay

et al. 2024

J Mar Sci Technol

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Water waves scattering by cylindrical dual porous floating breakwaters connected with a rectangular porous box and floating over an undulated seabed

Cited by 8 publications

References 60 publications

Oblique wave scattering by a rectangular porous floating breakwater with slotted screens over a sill-type seabed

Oblique wave scattering by a rectangular porous floating breakwater with slotted screens over a sill-type seabed

Experimental study on the hydrodynamic characteristics of a Bragg breakwater with triple vertical plates

Hydrodynamic analysis of oscillating water column in the presence of seabed undulations

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