A study for the protection of a region on the northern coast of the nile delta

In the last years there are an international concern forthe coastal zones. Protection of coastal zones against pollution is considered from the most important problems. In ttlis work, a three-dimensional hydrodynamic model has beendeveloped to simulate the flow patterns for free water surface flow systems. The Finite Difference Method has beenused to evaluate the three-dimensional model. The numericalsolution is utilized the vorticity-transport and stream-function approach. The developed three-dimensionalhydrodynamic model has been verified using detailed laboratory as well as field measurements for a reach of theNile River and a good agreement was found. Also a three-dimensional model has been calibrated to simulateconservative and nonconservative pollutant transport throughfree water surface flow systems. The Finite Element Method has been used to solve the partial differential equationsthat govern the solute transport pllenomenon. Sensitivity analysis has beeen carried out to study the effect ofdifferent factors that control the solute transport. Also the model has been applied to hypothetical three-dimensional problems which may be occured in the real world. It isconcluded that the three-dimensional hydrOdynamic model can be used efficiently and successfully as a tool for studying the solute transporl problems in free water surface flowsystems. That for the purpose of protection the coaslal zonesagdinst pollution. The study also pointed out the mostimportant factors that must be considered when dealing withthe solute transport problems. Finally the models have been applied to study the protection of a region on the northern coast of the Nile Delta. Rosetta coast was selected to be the considered region.