Tracking Sediment Particles under Wave-Current Coexisting Field

Tajima, Yoshimitsu; Kozuka, Masayuki; Tsuru, Mitsuo; Ishii, Takatoshi; Sakagami, Takeharu; K, Momose; Mimura, Naoya; Madsen, Ole Secher

doi:10.1061/40926(239)8

Cited by 2 publications

(3 citation statements)

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“…Radiation stress is included to consider the effect from short waves. Following Tajima et al(2007), the movement of sediment particles is associated with the bottom shear stress under combined waves-current field.…”

Section: Numerical Modelmentioning

confidence: 99%

“…Using this assumption, the speed of sediment movement was overestimated comparing with the field observation. Afterward, the model proposed by Tajima et al (2007) was applied with certain modifications. In their model, the movement of each sediment particle includes two components, a mean movement and a random walk.…”

Section: Sediment Movement Modulementioning

confidence: 99%

“…To consider the dispersion characteristics of sediment movement, a random component based on random walk theory is adopted. Tajima et al (2007) considered that the sediment took a random walk only in the mean current direction and in the wave-propagation direction, and suggested two different dispersion coefficients for wave and current. In their model, the sediment movement was averaged over one wave period and the time step for calculating sediment movement was larger than several wave periods, so the random walk in one time step was designed to display the orientation effect of wave oscillating motion and mean current.…”

Section: ( )mentioning

confidence: 99%

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67. SEDIMENT MOVEMENT UNDER COMBINED WAVES, TIDE AND RIVER DISCHARGE IN A RIVER MOUTH

Niu

Ueyama

Sato

et al. 2009

Proceedings of Coastal Dynamics 2009

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Sediment movement around the river mouth is intensive and complicated, owing to the combined effects of short waves, long waves, tide currents and river discharge, which usually leads to great and frequent topography change. This study aims to describe the sediment movement in a river mouth, further to distinguish the contribution of each hydrodynamic component to sediment movement, and to get better understanding on the nonlinear effects to sediment transport and their interactions. A numerical model was developed to simulate the hydrodynamic environment and the movement of color sand tracers. Both field survey and numerical modeling were carried out around the Magome River mouth, which is located on the Enshu Coast, Shizuoka Prefecture, Japan and drains into the Pacific Ocean.

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Section: Numerical Modelmentioning

confidence: 99%

Section: Sediment Movement Modulementioning

confidence: 99%

Section: ( )mentioning

confidence: 99%

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