Abstract
Experimental Study of the Impact of Drift, Depth, and Lateral Restrictions on Inland Ship-Induced Waves under Small and Moderate Ship Speeds
Highlights
Inland navigation is strongly affected by restricted waters
The free surface deformation is induced by the fluid motion
The Froude number is relatively small meaning that the gravitational energy overcomes the kinetic energy produced by inertial effects, which means that the ship wake is mainly caused by gravitational waves
Summary
Inland navigation is strongly affected by restricted waters. Due to the huge increase of resistance observed when the depth to draft ratio decreases and the increase of the interaction between the hull-propeller and rudder [1], the ship’s safety could rapidly become endangered because of the difficulty of maneuvering. To investigate the effect of speed variation on ship waves, a cut of the wave elevations at different FrL is presented in (Figure 9) for respectively two channel depths and at constant ship draft (T=0.04m). To look more closely at the effect of speed variation both on deep and medium shallow water, (Figure 10) presents a comparison of wave cuts at two length-based Froude numbers (FrL=0.077 and FrL=0.092).
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