Experimental study on oblique water entry of two tandem spheres with collision effect
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DOI: 10.1007/s12650-019-00602-4
Abstract: Abstract In this paper, the hydrodynamic characteristics associated with oblique water entry of two tandem spheres were experimentally investigated using high-speed photography. The results indicated that in the cavity formed by the first sphere, a… read more here.
Keywords: oblique water; entry two; effect; cavity ... See more keywords
Two-phase SPH simulation of vertical water entry of a two-dimensional structure
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DOI: 10.1007/s42241-018-0102-x
Abstract: In view of the fact that the SPH model is easy to handle the flows with the free surface of large deformation, a 2-D flow induced by vertical water entry of a 2-D structure is… read more here.
Keywords: water; surface; density; cavity ... See more keywords
Hydroelastic analysis of water entry of deformable spheres
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Hydrodynamics"
DOI: 10.1007/s42241-021-0065-1
Abstract: This paper presents a numerical study of the hydroelastic coupling during the free-surface water entry of deformable spheres of different material densities. The focus is on the hydrodynamic forces, the stress loads, the sphere deformations,… read more here.
Keywords: deformable spheres; water; spheres hydroelastic; water entry ... See more keywords
Water entry sound detection in strong noise by using the spectrogram matrix decomposition method
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DOI: 10.1016/j.apacoust.2019.107171
Abstract: Abstract The water entry transient sound of a projectile can be used for early target detection in passive sonar. Two detectors for the transient sound with low Signal to Noise Ratios (SNRs) have been proposed… read more here.
Keywords: detection; matrix; detector; matrix decomposition ... See more keywords
Numerical study on the cavity characteristics and impact loads of AUV water entry
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DOI: 10.1016/j.apor.2019.05.012
Abstract: Abstract The high-speed water entry process of an autonomous underwater vehicle (AUV) has a strong impact nonlinearity, and a cavity formed by air and water will often be generated as part of the entry process.… read more here.
Keywords: entry; water; characteristics impact; cavity characteristics ... See more keywords
Critical angle of attack and the corresponding impact cavity for non-circuitous trajectory of water entry of circular cylinder
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DOI: 10.1016/j.apor.2020.102322
Abstract: Abstract The critical initial angle of attack that the cylinder can move along the non-circuitous trajectory in water entry is investigated experimentally and numerically. A primary focus is on characterizing the relationship between the initial… read more here.
Keywords: angle attack; cylinder; water entry;
Experimental and numerical investigations of water entry in subsea modules with porous structures
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DOI: 10.1016/j.apor.2021.102554
Abstract: Abstract Slamming impacts on subsea modules used for oil and gas exploration and production have become an increasingly important structural safety issue. There are many aspects of the subsea module water entry problem that have… read more here.
Keywords: porous plates; subsea modules; water entry;
A contribution to underwater acoustic problem in water entry of wedge-shaped bodies
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DOI: 10.1016/j.apor.2021.102649
Abstract: Abstract Generation, propagation, reflection, and interference of pressure waves in the water entry of wedge-shaped bodies are investigated in this study using a modified 2D acoustic equation. Impact pressure generated by symmetric and asymmetric entry… read more here.
Keywords: entry; wedge shaped; water entry; pressure ... See more keywords
On the fully nonlinear water entry of a cone in Stokes wave
Sign Up to like & getrecommendations! Published in 2019 at "Engineering Analysis with Boundary Elements"
DOI: 10.1016/j.enganabound.2018.10.019
Abstract: Abstract Motivated by the wave entry problems of the three-dimensional (3D) ship bow, the paper concentrates on the interaction between an incident wave and a falling cone. The nonlinear 5th order Stokes wave is used… read more here.
Keywords: entry; fully nonlinear; cone; stokes wave ... See more keywords
Water entry of compliant slender bodies: Theory and experiments
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Mechanical Sciences"
DOI: 10.1016/j.ijmecsci.2017.07.041
Abstract: Abstract Hydroelastic phenomena play a critical role on the dynamics of lightweight marine vessels, but a comprehensive understanding of their potential benefits and drawbacks in water impact remains elusive. In contrast with the literature on… read more here.
Keywords: entry compliant; water; slender bodies; compliant slender ... See more keywords
The influence of aeration and compressibility on slamming loads during cone water entry
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluids and Structures"
DOI: 10.1016/j.jfluidstructs.2016.12.012
Abstract: The problem of the impact between a rigid body and a gas-liquid mixture is relevant to various engineering applications, including the design of breakwaters and LNG containers. In the present study, the particular problem of… read more here.
Keywords: water; impact; air; cone ... See more keywords