Structural permeability effects on the interaction of a solitary wave and a submerged breakwater

Huang, Ching Jer; Chang, Hsing Han; Hwung, Hwung Hweng

doi:10.1016/s0378-3839(03)00034-6

Cited by 96 publications

(72 citation statements)

References 34 publications

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“…(2), similar to the approach taken by Huang et al (2003), in order to simplify the interface boundary conditions. Higuera et al (2013) commented that the inclusion of turbulence model could greatly improve the breaking wave simulations.…”

Section: Equations For Flow Outside Porous Mediamentioning

confidence: 99%

“…In this work, the unsteady 2D NS equations in the Lagrangian form are used for solving the flow outside of porous media. The NS-type equations, originally proposed by Huang et al (2003) for porous flow in the Eulerian form, are recast in the Lagrangian form for solving the flow inside porous media.…”

Section: Governing Equationsmentioning

confidence: 99%

“…Following Huang et al (2003) and Shao (2010), the flow outside of the porous media is considered as laminar and can be solved by the two-dimensional unsteady Navier-Stokes equations. The Lagrangian form of these equations is expressed as 1 0…”

Section: Equations For Flow Outside Porous Mediamentioning

confidence: 99%

“…In recent years, more general and rigorous models have been developed based on van Gent's (1995) Reynolds-averaged Navier-Stokes (RANS) equations, also including those by Huang et al (2003) and Liu et al (1999). Huang et al (2003) coupled the unsteady laminar NS equation model and another NS-type model to separately solve the flows outside and inside the porous structure for a solitary wave interaction with submerged porous breakwater.…”

Section: Introductionmentioning

confidence: 99%

“…Huang et al (2003) coupled the unsteady laminar NS equation model and another NS-type model to separately solve the flows outside and inside the porous structure for a solitary wave interaction with submerged porous breakwater. Liu et al (1999) derived the RANS equations to study wave overtopping on a breakwater with protective porous armour layer.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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: Equations For Flow Outside Porous Mediamentioning

confidence: 99%

Section: Governing Equationsmentioning

confidence: 99%

Section: Equations For Flow Outside Porous Mediamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Incompressible SPH simulation of wave interaction with porous structure

et al. 2015

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Incompressible smoothed particle hydrodynamics simulation of multifluid flows

Shao

2011

Numerical Methods in Fluids

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SUMMARY This paper presents an incompressible SPH (ISPH) technique to simulate multifluid flows. The SPH method is a mesh‐free particle modeling approach that can treat free surfaces and multi‐interfaces in a simple and efficient manner. The ISPH method employs an incompressible hydrodynamic formulation to solve the fluid pressure that ensures a stable pressure field. Two multifluid ISPH models are proposed following different interface treatments: the coupled ISPH model does not distinguish the different fluid phases and applies the standard ISPH technique across the interface, whereas the decoupled ISPH model first treats each fluid phase separately and then couples the different phases by applying pressure and shear stress continuities across the interface. The two proposed models were used to investigate a gravity underflow with a low density ratio in a Generalized Reservoir Hydrodynamics (GRH) flume and a horizontal lock exchange flow with a high density ratio. Comparisons with data and relevant numerical error analysis indicated that the decoupled model performed well in cases of both low and high density ratios because of the accurate treatment of interface boundaries. Copyright © 2011 John Wiley & Sons, Ltd.

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SPH‐based numerical treatment of the interfacial interaction of flow with porous media

Kazemi

Tait

Shao

2019

Numerical Methods in Fluids

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Summary In this paper, the macroscopic equations of mass and momentum are developed and discretized based on the smoothed particle hydrodynamics (SPH) formulation for the interaction at an interface of flow with porous media. The theoretical background of flow through porous media is investigated to highlight the key constraints that should be satisfied, particularly at the interface between the porous media flow and the overlying free flow. The study aims to investigate the derivation of the porous flow equations, computation of the porosity, and treatment of the interfacial boundary layer. It addresses weak assumptions that are commonly adopted for interfacial flow simulation in particle‐based methods. As support to the theoretical analysis, a two‐dimensional weakly compressible SPH model is developed based on the proposed interfacial treatment. The equations in this model are written in terms of the intrinsic averages and in the Lagrangian form. The effect of particle volume change due to the spatial change of porosity is taken into account, and the extra stress terms in the momentum equation are approximated by using Ergun's equation and the subparticle scale model to represent the drag and turbulence effects, respectively. Four benchmark test cases covering a range of flow scenarios are simulated to examine the influence of the porous boundary on the internal, interface, and external flows. The capacity of the modified SPH model to predict velocity distributions and water surface behavior is fully examined with a focus on the flow conditions at the interfacial boundary between the overlying free flow and the underlying porous media.

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Structural permeability effects on the interaction of a solitary wave and a submerged breakwater

Cited by 96 publications

References 34 publications

Incompressible SPH simulation of wave interaction with porous structure

Incompressible SPH simulation of wave interaction with porous structure

Incompressible smoothed particle hydrodynamics simulation of multifluid flows

SPH‐based numerical treatment of the interfacial interaction of flow with porous media

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