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هفتمین همایش بین المللی سواحل، بنادر و سازه های دریایی
جزئیات رویداد
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همایش ، رویداد ، ژورنال
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  • wave-current interaction and its influence on sediment transport

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    • تاریخ ارائه: 1385/01/01
    • تاریخ انتشار در تی پی بین: 1385/01/01
    • تعداد بازدید: 774
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the interactions between waves and currents were evaluated and their potential influence on sediment transport assessed. to consider wave-current interactions, wave and current fields were individually examine and then combined. flow fields were explored using an available hydrodynamic model, the environmental fluid dynamics code (hamrick, 1996; jin et al. 2000). three flow fields were considered: a strong current (a river), a moderate current (a bay or harbor), and a weak current (small lake with wind-driven circulation). wave fields were explored using small amplitude (linear) wave theory. the combined effect of wave-current interactions was explored using the approach of grant and madsen (1979). these analyses indicate that, in the presence of currents, waves dramatically enhance sediment transport. even when a current is weak, the combined effect of waves and currents can resuspend and transport sediments. for the conditions explored, bottom shear stresses from wave-current interaction were greater than the shear stresses from currents alone by an order of magnitude or more.

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