Numerical Simulation of Surf Zone Dynamics

Bradford, Scott F.

doi:10.1061/(asce)0733-950x(2000)126:1(1)

Cited by 155 publications

(126 citation statements)

References 27 publications

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“…The necessity of a relaxation zone is discussed by Bradford (2000), where he found that it is not possible to simulate more than O(10) wave periods, if the incident waves and the reflected waves/seaward directed mean flow are not separated. The method is described in details in Jacobsen (2011).…”

Section: Test Casementioning

confidence: 99%

A Full Hydrodynamic Modelling of 2d Breaker Bar Development

Jacobsen¹,

Fredsøe²

2011

The Proceedings of the Coastal Sediments 2011

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Abstract:The free surface simulation of breaking waves is studied using a combination of VOF and RANS closures. Further, a numerical model for the detailed study of sediment transport and morphological development is presented. In the present study it is applied to the case of sediment transport in the surf zone. The temporal change of a cross shore beach profile under both regular and bichromatic waves is considered. The dependency on the morphological time scale on the regularity of the incident waves is discussed. The feedback onto the hydrodynamics due to a changing bed level is discussed in the case of regular waves.

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Section: Test Casementioning

confidence: 99%

A Full Hydrodynamic Modelling of 2d Breaker Bar Development

Jacobsen¹,

Fredsøe²

2011

The Proceedings of the Coastal Sediments 2011

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“…The turbulent and highly rotational flow field under breaking waves is extremely complex and difficult to model even with the Reynolds-averaged form of the Navier-Stokes equations (e.g., Lin and Liu 1998;Bradford 2000). In BOUSS-2D, we do not attempt to model details of the turbulent motion, but rather, simulate the effect of breaking-induced turbulence on the flow field.…”

Section: Simulation Of Wave Breakingmentioning

confidence: 99%

BOUSS-2D: A Boussinesq Wave Model for Coastal Regions and Harbors

Nwogu¹,

Demirbilek²

2001

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“…Bradford [15] proposed a numerical solution of the NS equations in conjunction with the VOF method and investigated the applicability of different turbulence closure models for modeling breaking waves in the nearshore zone. Zhang and Liu [16] simulated dam break-generated bores,…”

Section: Introductionmentioning

confidence: 99%

Air–water two-phase flow modeling of turbulent surf and swash zone wave motions

Bakhtyar

Razmi

Barry

et al. 2010

Advances in Water Resources

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Wave breaking and wave runup/rundown have a major influence on nearshore hydrodynamics, morphodynamics and beach evolution. In the case of wave breaking, there is significant mixing of air and water at the wave crest, along with relatively high kinetic energy, so prediction of the free surface is complicated. Most hydrodynamic studies of surf and swash zone are derived from single-phase flow, in which the role of air is ignored. Two-phase flow modeling, consisting of both phases of water and air, may be a good alternative numerical modeling approach for simulating nearshore hydrodynamics and, consequently, sediment transport. A two-phase flow tool can compute more realistically the shape of the free surface, while the effects of air are accounted for. This paper used models based on two-dimensional, two-phase Reynolds-Averaged NavierStokes equations, the Volume-Of-Fluid surface capturing technique and different turbulence closure models, i.e., k-ε, k-ω and Re-Normalized Group (RNG). Our numerical results were compared with the available experimental data. Comparison of the employed method with a model not utilizing a two-phase flow modeling demonstrates that including the air phase leads to improvement in simulation of wave characteristics, especially in the vicinity of the breaking point.The numerical results revealed that the RNG turbulence model yielded better predictions of nearshore zone hydrodynamics, although the k-ε model also gave satisfactory predictions. The model provides new insights for the wave, turbulence and means flow structure in the surf and swash zones.

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Numerical Simulation of Surf Zone Dynamics

Cited by 155 publications

References 27 publications

A Full Hydrodynamic Modelling of 2d Breaker Bar Development

A Full Hydrodynamic Modelling of 2d Breaker Bar Development

BOUSS-2D: A Boussinesq Wave Model for Coastal Regions and Harbors

Air–water two-phase flow modeling of turbulent surf and swash zone wave motions

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