Author(s): Di Silvio; Dall’Angelo; Zaggia; Rapaglia
Linked Author(s):
Keywords: Waves; Navigation canal; Displacement; Sediment re-suspension; Estuary
Abstract: Navigation canals in estuaries are typically surrounded by ample natural shoals of much smaller depth and/or by semi-enclosed zones of reduced area. Even if the ship exhibits a relatively weak wake, the very same displacement of her submersed volume may have remarkable effects in the contiguous regions of the canal. The non-stationary currents created by the passing ship correspond to the superposition of a stationary flow field and a uniform motion (proportional to the ship velocity). The final resultant flow field, calculated via a simple two-dimensional model, and the consequent effects on the surrounding areas result to be dependent on the ship's speed and the geometrical characteristics of the system canal/ship.
Year: 2011