Velocity distribution in combined wave–current flows

Yang, Shu-Qing; Tan, Soon Keat; Lim, Siow‐Yong; Zhang, Shuo-Fu

doi:10.1016/j.advwatres.2005.09.010

Cited by 27 publications

(12 citation statements)

References 24 publications

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“…When waves are superimposed in the same direction of the current there is a significant reduction of the mean horizontal velocity in the upper half of the water column, while when waves have opposite direction of the current the vertical shear of horizontal velocity increases. Yang et al (2006) has stated that the cause for this behavior is due to not only the wave induced Reynolds stresses, but also to the non uniformity of the flow and secondary currents.…”

Section: Discussionmentioning

confidence: 99%

The Influence of the Turbulence Closure Model on Wave-Current Interaction Modeling at a Local Scale at a Local Scale

Teles¹,

Pires-Silva²,

Benoît

2012

Int. Conf. Coastal. Eng.

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An advanced CFD solver based on the RANS (Reynolds Averaged Navier-Stokes) equations is used to evaluate wave-current interactions through numerical simulations of combined wave-current free surface turbulent flows. The repercussions of various schemes for modeling turbulence effects is addressed with a special attention to the exchanges and fluxes of momentum and energy between the mean flow components and the wave (oscillatory) component. Numerical simulations are compared with experimental data from Klopman (1994).

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Section: Discussionmentioning

confidence: 99%

The Influence of the Turbulence Closure Model on Wave-Current Interaction Modeling at a Local Scale at a Local Scale

Teles¹,

Pires-Silva²,

Benoît

2012

Int. Conf. Coastal. Eng.

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“…Several analytical 1D wave-current models and boundary layer theories have been proposed to reproduce the quasi-Eulerian current response observed in the laboratory experiments detailed above. Relying on either the surface distortion of the depth dependent eddy-viscosities (Huang and Mei, 2003), parameterization of wave induced second order stresses (You, 1996), or a mixing length hypothesis (Yang et al, 2006) they are capable of roughly replicating measured vertical velocity profiles. More recently, Olabarrieta et al (2010) proposed a 3D non hydrostatic Eulerian wave-current model using a one equation eddy viscosity turbulence closure able to mimic the current response to waves from the laboratory experiments.…”

Section: Comparison To Wave-current Models and Boundary Layer Theoriesmentioning

confidence: 99%

Impacts of surface gravity waves on a tidal front: A coupled model perspective

et al. 2020

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A set of realistic coastal coupled ocean-wave numerical simulations is used to study the impact of surface gravity waves on a tidal temperature front and surface currents. The processes at play are elucidated through analyses of the budgets of the horizontal momentum, the temperature, and the turbulence closure equations. The numerical system consists of a 3D coastal hydrodynamic circulation model (Model for Applications at Regional Scale, MARS3D) and the third generation wave model WAVEWATCH III (WW3) coupled with OASIS-MCT at horizontal resolutions of 500 and 1500 m, respectively. The models were run for a period of low to moderate southwesterly winds as observed during the Front de Marée Variable (FroMVar) field campaign in the Iroise Sea where a seasonal small-scale tidal sea surface temperature front is present. Over the 2 day period considered, long fetch waves grow gradually propagating north east and east. Highlights► A novel ocean-wave coupled modelling and analysis framework was developed. ► Realistic high resolution numerical simulations reveal wave-current interactions. ► Wave enhanced mixing reduces or enhances surface currents when following or opposing. ► Waves alter the position of the surface temperature tidal front in the Iroise Sea. ► Wave-ocean dynamics and kinematics in a tidally driven coastal ocean are described.

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“…But Perry et al [16] analyzed many available experimental data and found this may not be true for flow with ribs or grooves, in which the friction factor is always influenced by the Reynolds number. Actually the resistance of the vegetated open channel includes two parts [17], i.e., skin resistance and form drag. The form drag is closely related the vortex volume near the vegetation [11] and the expression of the skin friction f sk was proposed by Yang et al [18].…”

Section: A the Total Resistance Determined By Skin Resistance And Fomentioning

confidence: 99%

Experimental Study on Flow Resistance Over Rigid Vegetated Channel

et al. 2019

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Vegetation is an important part of the ecological channel, and flow structure over vegetation in ecological channel is rather complex. The vegetation resistance to flow is affected by many factors, and there is still no general calculation method to express it. Thus, it is necessary to explore the mechanism of flow resistance over vegetation in open channel. In this paper, the rigid cylindrical sticks arranged in the open channel were used to simulate the stems of non-submerged vegetation in order to investigate the effects of vegetation on the flow. Through theoretical analysis and experimental verification, it shows the form drag caused by vegetation is closely related to the vortex volume created by vegetation. In addition, the total resistance of vegetated channel can be determined by two methods based on vegetation density and flow resistance partitioning, respectively, and both of them are verified by the experimental results. What's more, for rigid vegetation, the drag coefficient is closely related to vegetation density, spacing between vegetation patches and the Reynolds number. The empirical formula among them was established through the experimental results. INDEX TERMS Velocity distribution, form drag, resistance partitioning, vortex structure, drag coefficient.

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Velocity distribution in combined wave–current flows

Cited by 27 publications

References 24 publications

The Influence of the Turbulence Closure Model on Wave-Current Interaction Modeling at a Local Scale at a Local Scale

The Influence of the Turbulence Closure Model on Wave-Current Interaction Modeling at a Local Scale at a Local Scale

Impacts of surface gravity waves on a tidal front: A coupled model perspective

Experimental Study on Flow Resistance Over Rigid Vegetated Channel

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