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Experiments on the water entry and/or exit of a cone

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(1)

(2)

max

0

max

x

0

2

max

max

(3)

max

0

max

max

max

= 0.6m/s and H is the maximum penetration depth. The evolution of the target velocity, ˙ z(t), and acceleration, ¨ z(t), are depicted in Figs. 4 and 5 below.

2.5 3 3.5

0 0.2 0.4 0.6

Velocity [m/s]

Time [s]

2.5 3 3.50

1 2 3 4 5 6

Acceleration [m/s²]

Velocity

Accel.

Figure 4: Target velocity and acceleration for the cone water exit

0 0.1 0.2 0.3 0.4 0.5

−0.6

−0.4

−0.2 0 0.2 0.4 0.6

Velocity [m/s]

Time [s]

0 0.1 0.2 0.3 0.4 0.50

1 2 3 4 5 6 7

Acceleration [m/s²]

Velocity

Accel.

(4)

max

(5)

nd

Figure 9: Sequence of images obtained during the water entry (a,b) and exit (c,d) of a cone

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