MATHEMATICAL MODEL FOR COASTAL SEDIMENT TRANSPORT FOR THE DAMIETTA PROMONTORY

MATHEMATICAL MODEL FOR COASTAL SEDIMENT
TRANSPORT FOR THE DAMIETTA PROMONTORY
*ABDEL FATTAH A. EL- FIKY, AHMED M. MAHAR**, MOTAZ
A.KHALED***AND ENG. AYMAN SAYED HASSAN SHARAF EL DIN ****
*Professor of Coastal Engineering Irrigation and Hydraulics Department Faculty of
Engineering, Ain Shams University,
**Former Head of Hydrographic Department Egyptian Navy, Alexandria,
*** Irrigation and Hydraulics Department Faculty of Engineering, Ain Shams University
**** P.O.Box 264 Sidi Gaber, Alexandria, Egypt
Keywords: Sediment transport, Shoreline changes, Genesis.
ABSTRACT
The Damietta Promontory was constructed by sediment delivered to the coast by the
Damietta branch of the Nile River. Following a long period of accretion the promontory
began to erode early this century. This present study deals with the coastal processes. A 2-
D mathematical model has been developed to study the coastal processes over the coastal
area. This model is capable to calculate the wave characteristics, current distribution,
sediment moving, and the corresponding bed level changes. The main objective of this
study is to take one stations at north coast of Egypt (Damietta) to estimate the amount of
erosion and accretion quantity, and to have a better understanding of beach stability in the
attendance of existing protected structure, also predict the shore line after 10 years. This
study also documented the rate of sediment transport, shore-line change and prediction of
its position along Damietta promontory, which clarify an equilibrium case for the shoreline
where it is oscillated between sea word and land word due to the exist of the detached break
water.