Wave Motion through Porous Structures

Yu, Xiping; Chwang, Allen T.

doi:10.1061/(asce)0733-9399(1994)120:5(989)

Cited by 127 publications

(58 citation statements)

References 13 publications

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“…Since then many improved models have been proposed to investigate a wide range of wave propagation problems, including wave transmission, reflection and dissipation around and through arbitrarily-shaped breakwaters with porous layers. These include the models based on the potential flow theory (Sulisz, 1985;Yu and Chwang, 1994), mild-slope equation (Rojanakamthorn et al, 1989) and shallow-water equations (Kobayashi and Wurjanto, 1990;Wurjanto and Kobayashi, 1993). Unfortunately, the predictive capability of these simplified models are very restricted as they are unable to account for some essential flow processes such as the nonlinearity (mild-slope equation), frequency dispersion (shallowwater equation) and wave breaking (potential flow equations).…”

Section: Introductionmentioning

confidence: 99%

Incompressible SPH simulation of wave interaction with porous structure

et al. 2015

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In this paper an incompressible Smoothed Particle Hydrodynamics (ISPH) method is applied to investigate the flow motion in and around the porous structure. In order to describe in a simple and effective way the flow through the interface between the porous region and pure fluid region within the SPH framework, a heuristic boundary treatment method has been proposed. The ISPH model is first verified against a theoretical model of wave propagation over a porous bed and then further validated by comparing the predicted wave surface profiles and flow velocity fields with the experiment data for a typical case of flow motion around and inside a submerged porous structure. The good agreement has demonstrated that the improved ISPH model developed in this work is capable of modelling wave interaction with porous structures.

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Section: Introductionmentioning

confidence: 99%

Incompressible SPH simulation of wave interaction with porous structure

et al. 2015

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“…In addition, a different expression of Eq. (18) can also be found in the paper of Yu and Chwang [4]. The velocity potential φ 3 satisfying Eq.…”

Section: Theoretical Analysismentioning

confidence: 88%

“…For water, f = 0.0, ε = 1.0 and s = 1.0. In the present study, the values of f and s are all simply taken to be constants as done by other researchers [4,13,16]. In fact, the inertial effect coefficient s is usually taken to be unity in practice.…”

Section: Theoretical Formulationmentioning

confidence: 98%

“…Following Yu and Chwang [4], the dynamic pressure at any point outside and inside the porous medium can be evaluated as…”

Section: Theoretical Analysismentioning

confidence: 99%

“…To describe water wave motions within porous medium, the theory of Sollitt and Cross [2] is adopted, as has been widely used by different researchers in the past [3,4,13,16,17]. According to Sollitt and Cross [2], the force exerted on the fluid by the porous medium consists of a resistance force represented by the linearized resistance coefficient and an inertial force represented by the inertial effect coefficient.…”

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confidence: 99%

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Wave interaction with a new type perforated breakwater

Liu

Teng

2007

Acta Mech Sin

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In this study examined is the wave interaction with a new modified perforated breakwater, consisting of a perforated front wall, a solid back wall and a wave absorbing chamber between them with a two-layer rock-filled core. The fluid domain is divided into three sub-domains according to the components of the breakwater. Then by means of the matched eigenfunction expansion method, an analytical solution is obtained to assess the hydrodynamic performance of the new structure. An approach based on a step approach method is introduced to solve the complex dispersion equations for water wave motions within two-layer porous media. Numerical results of the present model are compared with previous limiting cases. The effects of rock fill on the reflection coefficient and the horizontal wave force are discussed.

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Performance of multilayered porous breakwater under irregular waves having different wave spectrum

Dash,

Koley,

Paul

et al. 2024

Engineering Reports

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In this present work, the performance of a two‐layered thick porous breakwater of trapezoidal structure is investigated under the action of irregular waves. To investigate the physical problem, the classical linear water wave theory has been taken into consideration. To analyze the effect of irregular waves on the multilayered structure, two unidirectional wave spectra, namely the Pierson–Moskowitz and JONSWAP spectra based on the frequency domains are considered. Three different sea states are taken to analyze the impact of irregular waves on the multilayered porous breakwater. The constant boundary element method is used to handle the aforementioned boundary value problem, which is considered one of the most efficient numerical tools for handling complex structured open sea problems. Several wave characteristics associated with the spectral density functions are demonstrated and analyzed for a variety of structural and spectral parameters. The findings suggest that the adoption of suitable porous material for the construction of these breakwaters can significantly enhance the energy dissipation and thereby minimize the wave force on the structure.

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Wave Motion through Porous Structures

Cited by 127 publications

References 13 publications

Incompressible SPH simulation of wave interaction with porous structure

Incompressible SPH simulation of wave interaction with porous structure

Wave interaction with a new type perforated breakwater

Performance of multilayered porous breakwater under irregular waves having different wave spectrum

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