Propeller jet flow scour around different quay wall configurations

Berth structures stability may effected by erosion due to berthing/unberthing maneuvering ship's propeller flow. In recent years, changing ship size, type and capacity related to amount of seabed scouring. In this study, laboratory experiments were carried out to investigate changing scouring profiles around berth structure as quay wall due to single and twin propellers jets that corresponds different types of ships. The experiments were carried out by considering effective parameters on scouring process. For this purpose, two different type of single and twin propeller with 10 cm diameters, propeller rotation speed (n), gap of the propeller (G) and changing (perpendicular and parallel) quay wall positions with different distances from propeller (plane or rotation axis) to the perpendicular and parallel quay walls (Xw and Yw) were used to detailed investigation on scour mechanism. The scour profiles were obtained experimentally under determined conditions for changing parameteres that are effective on the process.