Numerical Modeling of Sediment Transport for Various Mode

Ono, Masanobu; Deguchi, Ichiro; Sawaragi, Toru

doi:10.1061/9780784402429.300

Cited by 8 publications

(5 citation statements)

References 7 publications

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“…Whether any of the existing granular flow models, e.g., Li and Sawamoto (1995a,b), Ono et al (1996), Katori et al (1996), Ostrowski (1996, 1998) and Dong and Zhang (1999), are able to model the observed fluxes in detail is an interestingly open question. It might be particularly challenging to model the strong downward fluxes which are observed with sand but not with lighter materials (Flores and Sleath, 1998).…”

Section: Discussionmentioning

confidence: 99%

Vertical fluxes of sediment in oscillatory sheet flow

Nielsen¹,

Wal²,

Gillan³

2002

Coastal Engineering

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Section: Discussionmentioning

confidence: 99%

Vertical fluxes of sediment in oscillatory sheet flow

Nielsen¹,

Wal²,

Gillan³

2002

Coastal Engineering

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“…Asano [2] presented one such model based on the approach of the Kobayashi and Seo [26], in which the vertical velocity of particles was approximated by empirical relations. Ono et al [41] devised a model, which assumed the same horizontal velocity for the fluid and the particles. Gotoh and Sakai [15] presented a numerical model for sediment transport in the sheet flow regime and flow kinematics considering particle-particle interactions.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of two-phase flow for sediment transport in the inner-surf and swash zones

Bakhtyar

Barry

Yeganeh‐Bakhtiary

et al. 2010

Advances in Water Resources

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a b s t r a c tA two-dimensional two-phase flow framework for fluid-sediment flow simulation in the surf and swash zones was described. Propagation, breaking, uprush and backwash of waves on sloping beaches were studied numerically with an emphasis on fluid hydrodynamics and sediment transport characteristics. The model includes interactive fluid-solid forces and intergranular stresses in the moving sediment layer. In the Euler-Euler approach adopted, two phases were defined using the Navier-Stokes equations with interphase coupling for momentum conservation. The k-e closure model and volume of fluid approach were used to describe the turbulence and tracking of the free surface, respectively. Numerical simulations explored incident wave conditions, specifically spilling and plunging breakers, on both dissipative and intermediate beaches. It was found that the spatial variation of sediment concentration in the swash zone is asymmetric, while the temporal behavior is characterized by maximum sediment concentrations at the start and end of the swash cycle. The numerical results also indicated that the maximum turbulent kinetic energy and sediment flux occurs near the wave-breaking point. These predictions are in general agreement with previous observations, while the model describes the fluid and sediment phase characteristics in much more detail than existing measurements. With direct quantifications of velocity, turbulent kinetic energy, sediment concentration and flux, the model provides a useful approach to improve mechanistic understanding of hydrodynamic and sediment transport in the nearshore zone.

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“…Moreover, Asano [1] suggested equations for the maximum erosion depth in oscillatory sheet flow conditions. Ono et al [36] devised a model where the horizontal velocity of the fluid and the particles where considered to be equal. Dong and Zhang [9] presented a two-phase flow model capable of simulating the fluid and particle motions in oscillatory sheet flows.…”

Section: Introductionmentioning

confidence: 99%