Journal ArticleDOI
Evolution of the air cavity during a depressurized wave impact. II. The dynamic field
TLDR
In this article, the impact duration at the wall is almost independent of its height above the undisturbed surface level, but its intensity rapidly decreases in the body of the fluid (the peak pressure halves within the first two compression/expansion cycles).Abstract:
The present paper on wave-impact events in depressurized environments completes the analysis of Part I by focusing on the dynamical features of the impacts and on the influence of the ambient pressure. Connection is made between the impact regimes typically described in the literature and the stages described in Part I [C. Lugni, M. Miozzi, M. Brocchini, and O. M. Faltinsen, “Evolution of the air cavity during a depressurized wave impact. I. The kinematic flow field,” Phys. Fluids 22, 056101 (2010)]. The stages of isotropic/anisotropic compression and expansion of the air cavity are of particular interest. The impact duration at the wall is almost independent of its height above the undisturbed surface level, but its intensity rapidly decreases in the body of the fluid (the peak pressure halves within the first two compression/expansion cycles). The time evolution of the pressure loads on the wall is analyzed by means of the Hilbert transform and an empirical mode decomposition of the signals. This enable...read more
Citations
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Journal ArticleDOI
Experimental investigation of dynamic pressure loads during dam break
TL;DR: In this paper, the authors conduct experimental measurements on a dam break flow over a horizontal dry bed in order to provide a detailed insight, with emphasis on the pressure loads, into the dynamics of the dam break wave impacting a vertical wall downstream the dam.
Journal ArticleDOI
Loads for use in the design of ships and offshore structures
Spyros Hirdaris,Wei Bai,Daniele Dessi,Aysen Ergin,X. Gu,Ole Andreas Hermundstad,Rene´ Huijsmans,Kazuhiro Iijima,Ulrik Dam Nielsen,Joško Parunov,Nuno Fonseca,Apostolos Papanikolaou,K. Argyriadis,Atilla Incecik +13 more
TL;DR: In this paper, the authors present a review of the recent advances in the assessment of loads for ships and offshore structures with the aim to draw the overall technological landscape available for further understanding, validation and implementation by the academic and industrial communities.
Experimental investigation of dynamic pressure loads during dam break
TL;DR: In this paper, the authors revisited the experimental measurements on dam break flow over a dry horizontal bed and provided a detailed insight into the dynamics of the dam break wave impacting a vertical wall downstream the dam, with emphasis on the pressure loads.
Journal ArticleDOI
Smoothed particle hydrodynamics and its applications in fluid-structure interactions
TL;DR: A review of the recent developments of smoothed particle hydrodynamics (SPH) method and its typical applications in fluid-structure interactions in ocean engineering can be found in this article.
References
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Journal ArticleDOI
The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis
Norden E. Huang,Zheng Shen,Steven R. Long,Man-Li C. Wu,Hsing H. Shih,Quanan Zheng,Nai-Chyuan Yen,C. C. Tung,Henry H. Liu +8 more
TL;DR: In this paper, a new method for analysing nonlinear and nonstationary data has been developed, which is the key part of the method is the empirical mode decomposition method with which any complicated data set can be decoded.
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The Acoustic Bubble
TL;DR: In this article, the authors present a bibliographie (a la fin de chaque chapitre), and index reference record created on 2004-09-07, modified on 2016-08-08
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Hydrodynamics of High-Speed Marine Vehicles
TL;DR: In this paper, the authors describe a planing vessel with wave resistance and propulsion, and planing vessels with planing, whipping, and springing, as well as a semi-displacement vessel.
Journal ArticleDOI
Survey of thermal, radiation, and viscous damping of pulsating air bubbles in water
TL;DR: In this article, a theoretical discussion on the fundamental processes by which pulsating gas bubbles in liquids dissipate their energy is presented, where the amplitude of the volume pulsations are assumed to be sufficiently small that the pulsations may be described by linear equations.