مقاله MODELLING OF SEDIMENT TRANSPORT IN BERIS FISHERY PORT با word دارای 9 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است

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سال انتشار: 1387

محل انتشار: هشتمین همایش بین المللی سواحل، بنادر و سازه های دریایی

تعداد صفحات: 9

چکیده:

Seventeen years old Beris Fishery Port is located in southeastern of Iran, 85km east of Chabahar (Figure 1). The main breakwater is extended from south to north where the secondary breakwater is in east-west direction. The port is suffering from two mechanisms of sedimentation, i.e. sedimentation at the head of the main breakwater and remarkable change of shoreline position at the back of the secondary breakwater which may endanger the port entrance in future.
The equilibrium state of Beris Bay is developed first. The parabolic shape equation is used as the best fitting curve to be fitted to the actual shape of the bay. MEPBAY software was employed to fit the parabolic curve in static equilibrium state. On the other hand, the existing aerial photographs were compared to understand the long-term evolution of the bay. PMS module of MIKE21 was used for the numerical modeling of wave transformation from deep water to shallow areas. Nearshore wave characteristics and the wave direction at the tip of the main breakwater were obtained from wave transformation model. The outputs revealed that the nearshore directions of wave components are not perpendicular to the coast resulting to a longshore sediment transport along the coastline. HYDROSED software was employed for the modeling of currents and sediment transport. The potential longshore sediment transport (LST) was obtained by HYDROSED and it was compared with the actual LST rate found from the comparison of hydrographic surveys. Specifying the LST rate as an input value, GENESIS software was finally employed for the prediction of Beris shoreline position in different years. The computation was continued until the
shoreline comes to a dynamic equilibrium state. The final shape of the bay was in good agreement with the actual shape of the bay.