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Applied Ocean Research
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#1P. Trapper (BGU: Ben-Gurion University of the Negev)H-Index: 6
#2Idan Mishal (BGU: Ben-Gurion University of the Negev)
Abstract The global pipeline configuration in installation is mainly governed by static lay effects, which, besides pipeline material properties and geometry, primarily depend on its submerged gravity and horizontal tension provided by the laying vessel. These loads are insensitive to the pipeline deformation and preserve both their values and their directions as the pipeline deforms throughout the whole course of the installation. However, these static lay effects may be significantly amplified...
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#1Hai-Ting Yu (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Ningyuan Duan (SJTU: Shanghai Jiao Tong University)
Last. Zhenguo Zhang (SJTU: Shanghai Jiao Tong University)H-Index: 5
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Abstract Rotor-stator interaction of a pump-jet propulsor can induce strong pressure fluctuations and vibrations, which may deteriorate the vibration and acoustic performance and cause damage to the propulsion system at some severe working conditions. In this paper, the role of stator parameters, such as the prewhirl angle, the rotor-stator spacing and the chord length of the stator blades, in the propulsion performance and unsteady forces of a pump-jet propulsor is investigated through a numeri...
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#1Peng Hu (ZJU: Zhejiang University)H-Index: 7
#2Jiafeng Xie (ZJU: Zhejiang University)
Last. Weiming Wu (Clarkson University)H-Index: 21
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Abstract Quantification of the bed shear stress in the swash zone is subject to much uncertainty due to the very shallow water, complex flow structure and the strong unsteadiness in this zone. This study presents a RANS modeling of experimental dam-break flow generated swash processes, giving numerical reproduction of vertical flow structure of swash flows and thus an opportunity to study the magnitude and features of the bed shear stress. Firstly, numerical solutions (i.e., temporal or spatial ...
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#1Mohsen Mohammadnejad (BNUT: Babol Noshirvani University of Technology)
#2M. Naghipour (BNUT: Babol Noshirvani University of Technology)H-Index: 9
Last. Majid Elyasi (BNUT: Babol Noshirvani University of Technology)H-Index: 8
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Abstract Nowadays concrete-filled steel tubes (CFTs) are used in many types of structures. In spite of significant advances, the application of this system has not widely adopted in marine structures. While due to the presence of hydrostatic pressure on the body of the tube, outward buckling, which may be considered as one of the weaknesses of the system, could be delayed. Therefore, theoretical and experimental studies were performed to investigate the effects of external pressure on the compre...
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#2Hongwei ZhangH-Index: 3
Last. Yanan YangH-Index: 3
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Abstract The traditional neutral buoyancy underwater vehicle's carrying capacity is limited by space and displacement, making it difficult to meet the increasing demand for mission sensors. In light of this, a new type of negative-buoyancy autonomous underwater vehicle equipped with an autorotating rotor is proposed in this paper. Referring to the principle of air autorotating rotor, the negative-buoyancy autorotating-rotor autonomous underwater vehicle (NAAUV) adopts an autorotating rotor to pr...
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#1Andrea Farkas (University of Zagreb)H-Index: 2
#2Nastia Degiuli (University of Zagreb)H-Index: 3
Last. Ivica Ančić (University of Zagreb)H-Index: 4
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Abstract Increase in ship energy efficiency is one of the main goals set by the International Maritime Organization (IMO). In this sense the IMO identified the significance of the control and management of the hull fouling. The weed or grass stage is often seen as the beginning stage of the ship hull fouling, while the effects of soft fouling on the ship resistance and propulsion characteristics as well as on the fuel oil consumption are mistakenly underestimated. A new method for the assessment...
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#1Siming Zheng (DUT: Dalian University of Technology)
#2Alessandro Antonini (TU Delft: Delft University of Technology)H-Index: 2
Last. Gregorio Iglesias (UCC: University College Cork)H-Index: 35
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Abstract A rectangular barge consisting of multiple oscillating water columns (OWCs) is considered in this paper, hereinafter referred to as a multi–OWC platform. Each OWC chamber is enclosed by two partially submerged vertical walls and the deck of the platform. An incident wave produces oscillation of the water column in each OWC chamber and hence air is pumped by the internal water surface to flow through a Wells turbine installed at the chamber top. The effect of the turbine is characterised...
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#1Simone Saettone (DTU: Technical University of Denmark)
#2Bhushan Taskar (DTU: Technical University of Denmark)
Last. Poul Andersen (DTU: Technical University of Denmark)H-Index: 9
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Abstract Maritime transport is the most energy-effective mode to move large amounts of goods around the world. Hauling cargo via waterway produces an enormous quantity of greenhouse gas emissions. Vessel fuel efficiency directly influences ship emissions by affecting the amount of burnt fuel. Optimizing ships operating in waves rather than in calm water conditions could decrease the fuel consumption of vessels. In particular, ship propellers are traditionally designed neglecting dynamic conditio...
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#1S. Mendes (UNC: University of North Carolina at Chapel Hill)
#2A. Scotti (UNC: University of North Carolina at Chapel Hill)
Abstract Originally discussed in the context of ocean statistics for oil rig platform decks and satellite data, spatiotemporal exceeding probability distributions have recently been thought to explain the failure of second and third-order nonlinear models of distributions at a fixed point in space. To investigate this possibility, we derive a simplified model for the (2+1) exceeding probability distribution of ocean waves based on the Gaussian random field approach, with a particular interest in...
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#1D Howe (Australian Maritime College)H-Index: 2
#2Jean-Roch Nader (Australian Maritime College)H-Index: 6
Last. Gregor Macfarlane (Australian Maritime College)H-Index: 10
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Abstract This article is Part B of a study into the proof-of-concept of a floating breakwater integrated with multiple Oscillating Water Column (OWC) Wave Energy Converters (WEC). The structure is designed for nearshore and offshore applications and the investigation was performed through model scale hydrodynamic experimentation. Part A introduced the concept and the experiments performed, followed by an investigation into the energy extraction performance of the installed OWC devices [1]. This ...
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Top fields of study
Nonlinear system
Submarine pipeline
Geotechnical engineering
Mathematics
Mechanics
Structural engineering
Classical mechanics