Wave scattering by inverted trapezoidal porous boxes using dual boundary element method

Vijay, K.G.; Venkateswarlu, V.; Nishad, Chandra Shekhar

doi:10.1016/j.oceaneng.2020.108149

Cited by 18 publications

(6 citation statements)

References 33 publications

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“…The fluid motion is governed by the Navier-Stokes equations composed of the continuity equation and the momentum equation. In the δ-SPH framework, they can be discretized, respectively, as [82,83] [5]; (e) Pontoon with an air chamber [6]; (f) Pontoon with two air chambers [7]; (g) Permeable structure [8]; (h) Y-Type pontoon [9]; (i) Trapezoidal pontoon-porous plates [10]; (j) Horizontal plate-nets [11]; (k) Dual cuboid pontoon [12]; (l) Dual cylindrical pontoon [13]; (m) Dual cylindrical pontoon-nets [14]; (n) Triple cuboid pontoons [15]; (o) Double-row cuboid pontoons [16]; (p) Double-row cuboid pontoons-mesh cage [17]; (q) Double-row cylindrical pontoons-mesh cage [18]; (r) F-type pontoon [19]; (s) Trapezoidal porous pontoons [20]; (t) T-type pontoon [24]; (u) Curtain wall [69]; (v) Pontoon with different cross-sections [73].…”

Section: Fluid Equationsmentioning

confidence: 99%

“…Under the potential flow theory, Duan et al [19] conducted a boundary element method (BEM)-based study on the principal dimensions of a F-type floating breakwater (Figure 1r). Vijay et al [20] analyzed the wave scattering over an array of trapezoidal porous pontoons (Figure 1s) with the dual BEM. The scaled boundary finite element method was used by Fouladi et al [21] to solve the interaction between waves and moored floating breakwaters with arbitrary cross-sections in an infinite fluid domain.…”

Section: Introductionmentioning

confidence: 99%

“…Most recently, Cui et al [74] compiled the open-source mooring analysis program MAP++ [75] into the SPH code to predict the hydrodynamic performance of a multi-module floating breakwater. [5]; (e) Pontoon with an air chamber [6]; (f) Pontoon with two air chambers [7]; (g) Permeable structure [8]; (h) Y-Type pontoon [9]; (i) Trapezoidal pontoon-porous plates [10]; (j) Horizontal plate-nets [11]; (k) Dual cuboid pontoon [12]; (l) Dual cylindrical pontoon [13]; (m) Dual cylindrical pontoon-nets [14]; (n) Triple cuboid pontoons [15]; (o) Double-row cuboid pontoons [16]; (p) Double-row cuboid pontoons-mesh cage [17]; (q) Double-row cylindrical pontoons-mesh cage [18]; (r) F-type pontoon [19]; (s) Trapezoidal porous pontoons [20]; (t) T-type pontoon [24];…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Study on the Hydrodynamic Characteristics of a Double-Row Floating Breakwater Composed of a Pontoon and an Airbag

Cheng

Liu

Zhang

et al. 2021

JMSE

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By adding a cylindrical airbag on the leeward side of a cuboid pontoon, a new-type double-row floating breakwater is designed to improve the wave attenuation performance, and its hydrodynamic characteristics are studied through numerical simulations. First, based on the smoothed particle hydrodynamics (SPH) method, a numerical model used to simulate the interaction between waves and moored floating bodies is built. The fluid motion is governed by the Navier–Stokes equations. The motion of the floating body is computed according to Newton’s second law. The modified dynamic boundary condition is employed to treat the solid boundary. The lumped-mass method is adopted to implement the mooring system. Then, two physical model experiments on waves interaction with cuboid and dual cylindrical floating pontoons are reproduced. By comparing the experimental and numerical wave transmission coefficients, wave reflection coefficients, response amplitude operators and mooring force, the reliability of the numerical model is validated. Finally, the validated numerical model is applied to study the influence of separation distance and wave parameters on the hydrodynamic characteristics of the double-row floating breakwater. The results indicate that the optimal separation distance between pontoon and airbag is 0.75 times the wavelength. At such separation distance and within the concerned 1–4 m wave heights and 4–7 s wave periods, the pontoon-airbag system presents better wave attenuation performance than a single pontoon. This improvement weakens as wave height increases while it strengthens as the wave period increases. In addition, the double-row floating breakwater is more effective in a high-wave regime than in a low-wave regime. In the case of short waves, attention should be paid to the stability and mooring reliability of the seaward pontoon, while in the case of long waves, care needs to be taken of the leeward airbag.

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Section: Fluid Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Study on the Hydrodynamic Characteristics of a Double-Row Floating Breakwater Composed of a Pontoon and an Airbag

Cheng

Liu

Zhang

et al. 2021

JMSE

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“…The Arbitrary Lagrangian-Eulerian (ALE) based FEM [34] can handle the great distortion of the computational mesh. The BEM can save memory and computational time since the numerical solution are obtained from the boundary integral [35]. In contrast to CFD, the smoothed particle hydrodynamics (SPH) [36] is a mesh-free Lagrangian method suitable for complex free-surface flows.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study of Hydrodynamic Response for a Novel Buoyancy-Distributed Floating Foundation Based on the Potential Theory

Yao

2022

JMSE

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Floating foundations play a vital role in exploring offshore energy. After analyzing various floating foundation concepts, this paper presents a novel buoyancy-distributed floating foundation (BDFF) inspired by the decentralized concept. The calculations of a floating system based on the BDFF design were performed for a series of wave conditions. The potential theory and the boundary element method (BEM) were used in the numerical progress. A broader view was focused on the impacts of wave frequency and wave directions on the system. The proposed floating system was further validated through wave tests in a wave tank, showing that the potential theory can satisfactorily predict the RAOs in regular waves. Moreover, numerical results and experimental results were compared with a conventional SPAR. Finally, the coupling relationship between six degrees of freedom was described.

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“…Ref. [24] analyzed water waves scattering by an array of inverted trapezoidal porous boxes using the DBEM solution method.…”

Section: Introductionmentioning

confidence: 99%

Performance of an U-Shaped Oscillating Water Column Wave Energy Converter Device under Oblique Incident Waves

Trivedi

Koley

Panduranga

2021

Fluids

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The present study deals with the performance of an U-shaped oscillating water column device under the action of oblique incident waves. To solve the associated boundary value problem, the dual boundary element method (DBEM) is used. Various physical parameters associated with the U-shaped OWC device, such as the radiation susceptance and conductance coefficients, and the hydrodynamic efficiency, are analyzed for a wide range of wave and structural parameters. The study reveals that the resonance in the efficiency curve occurs for smaller values of wavenumber with an increase in chamber length, submergence depth of the front wall and opening duct, and width of the opening duct. It is observed that with appropriate combinations of the angle of incidence and incident wavenumber, more than 90% efficiency in the U-shaped OWC device can be achieved.

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Wave scattering by inverted trapezoidal porous boxes using dual boundary element method

Cited by 18 publications

References 33 publications

Numerical Study on the Hydrodynamic Characteristics of a Double-Row Floating Breakwater Composed of a Pontoon and an Airbag

Numerical Study on the Hydrodynamic Characteristics of a Double-Row Floating Breakwater Composed of a Pontoon and an Airbag

Numerical and Experimental Study of Hydrodynamic Response for a Novel Buoyancy-Distributed Floating Foundation Based on the Potential Theory

Performance of an U-Shaped Oscillating Water Column Wave Energy Converter Device under Oblique Incident Waves

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