New Contributions to Hydroballistics

Burt, F. S.

doi:10.1016/b978-1-4831-9932-0.50009-7

Cited by 4 publications

(3 citation statements)

References 50 publications

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“…Extensive general reviews on hydrodynamic impact and ship slamming are also available, and in particular we make reference to Szebehely [23], Chu and Abrahamson [3], Burt [2], Thigpen [25] and May [11].…”

Section: T Milohmentioning

confidence: 99%

“…Hence we get a rather simple expression: 53)) with the empirical result of Cooper [4] and the experimental data given in Burt [2].…”

Section: Dzo(t) = Vr(t)dt = -R Sin Oo (T)doomentioning

confidence: 99%

“…It should be noted however that actual measurements of splash contours (White [32], Nisewanger [15], Burt [2]) clearly demonstrate that the wetting factor changes considerably with the penetration depth as predicted by the theoretical model (57). A comparison between the experimental measurements of White [32] with the theoretical model (57) is presented in Fig.…”

Section: Dzo(t) = Vr(t)dt = -R Sin Oo (T)doomentioning

confidence: 99%

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Wave slam on a sphere penetrating a free surface

Miloh

1981

J Eng Math

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The problem of vertical motion of a sphere across an oscillating free surface is analysed by assuming the fluid to be inviscid and the free surface to be an equipotential surface. New analytical solutions for the added-mass coefficients of a double spherical bowl are derived. These are used in the derivation of the drag coefficient of a sphere during vertical entry and of the slamming coefficient of a fixed sphere which is exposed to wave action. An additional important parameter in hydroballistics is the wetting factor of a sphere penetrating a free surface for which a new analytic solution is also derived in this paper. A comparison between some experimental data and the analytic expressions for the slamming coefficient and the wetting factor, shows good agreement between theory and measurements.

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Section: T Milohmentioning

confidence: 99%

“…Hence we get a rather simple expression: 53)) with the empirical result of Cooper [4] and the experimental data given in Burt [2].…”

Section: Dzo(t) = Vr(t)dt = -R Sin Oo (T)doomentioning

confidence: 99%

Section: Dzo(t) = Vr(t)dt = -R Sin Oo (T)doomentioning

confidence: 99%

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Wave slam on a sphere penetrating a free surface

Miloh

1981

J Eng Math

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On the initial-stage slamming of a rigid sphere in a vertical water entry

Miloh

1991

Applied Ocean Research

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Experimental study on water entry of cylindrical projectiles with different nose shapes

et al. 2019

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Water entry experiments of projectiles with different nose shapes were performed under different entry angles and velocities using high-speed photography technology. The cavity flow characteristics of the near water surface, including splash jet, splash crown, surface seal of cavity, pull away, deep seal of cavity and cavity collapses, were systematically investigated using a high-speed camera. The emphasis of the study is paid on the effect of nose shape, water entry angle and velocity on the evolution of the air entraining cavity. The experimental results demonstrate that the nose shape of projectile has a significant influence on the jet flow, the cavity diameter and trajectory stability in the case of certain other conditions. On the other hand, the splash scale, cavity diameter increase gradually with the increasing of the water entry velocity, as well as the cavitation closed in advance. Furthermore, the water entry angle of the projectile plays an important role in the cavity evolution and the close type.

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New Contributions to Hydroballistics

Cited by 4 publications

References 50 publications

Wave slam on a sphere penetrating a free surface

Wave slam on a sphere penetrating a free surface

On the initial-stage slamming of a rigid sphere in a vertical water entry

Experimental study on water entry of cylindrical projectiles with different nose shapes

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