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Ali Karimpour, Salam Rahmatalla and Casey Harwood
This article presents a new analysis to determine the variation in modal dynamic characteristics of bridge superstructures caused by hydrodynamic added mass (HAM) during progressive flooding. The natural frequency variations were numerically and experime...
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Aleksander Grm
This paper deals with the hydrodynamic effect of the ship on a flexible dolphin during a mooring manoeuvre. The hydrodynamic effect refers to the change in momentum of the surrounding fluid, which is defined by the concept of added mass. The main reason ...
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Ivan Catipovic, Neven Alujevic, Smiljko Rudan and Vedran Slapnicar
Synthetic fibre mooring lines are used as an alternative to traditional steel wire ropes due to their higher strength to weight ratio. Benefits are also found in relative ease of handling, and therefore the marine industry has largely accepted this type ...
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Dimitrios N. Konispoliatis, Spyridon A. Mavrakos and Georgios M. Katsaounis
The present paper deals with the analytical evaluation of the hydrodynamic characteristics of an array of vertical axisymmetric bodies of arbitrary shape, placed in front of a reflecting vertical breakwater, which can be conceived as floaters for wave po...
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Kuo-Wei Liao, Fu-Sheng Chien and Rong-Jing Ju
A safety analysis process for an immersed bridge is proposed, in which material nonlinear properties, added mass, soil spring, plastic hinge length and property, nonlinear pushover analysis, and time history analysis are included. Outcomes of interest in...
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Lusheng Jia, Yi Liu, Mengmeng Zhang, Shixiao Fu and Haojie Ren
In this paper, the vortex-induced force characteristics of a flexible riser with buoyancy modules and strakes were experimentally investigated. The strain information caused by vortex-induced vibration (VIV) at different cross-sections on the flexible cy...
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Pieter Maljaars, Mirek Kaminski and Henk Den Besten
Boundary element methods (BEM) have been used for propeller hydrodynamic calculations since the 1990s. More recently, these methods are being used in combination with finite element methods (FEM) in order to calculate flexible propeller fluid–struc...
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Pieter Maljaars, Mirek Kaminski and Henk Den Besten
Boundary element methods (BEM) have been used for propeller hydrodynamic calculations since the 1990s. More recently, these methods are being used in combination with finite element methods (FEM) in order to calculate flexible propeller fluid?structure i...
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Srikanth Goli, Arnab Roy, Subhransu Roy
Pág. 259 - 269
This study investigated the effect of a winglet on the velocity field around a rigid flapping wing. Two-dimensional particle image velocimetry was used to capture the velocity field of asymmetric one-degree-of-freedom flapping motion. A comparison was co...
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Anargyros S. Mavrakos, Dimitrios N. Konispoliatis and Spyridon A. Mavrakos
The present contribution aims at presenting a semi-analytical solution methodology of the linear hydrodynamic diffraction and radiation problems induced by two coaxial moonpool-type floaters subjected to incident waves. The flow field around the floaters...
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Fernando Tamarit, Emilio García, Eduardo Quiles and Antonio Correcher
This work is part of a series of publications that propose a floating hybrid system for which a simulation tool has been developed, called FHYGSYS (Floating Hybrid Generator Systems Simulator). The objective of this series of publications is to analyze t...
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Krish Thiagarajan and Javier Moreno
The research problem discussed in this paper is of relevance to floating offshore wind turbine design, where heave plates are attached to the columns of a semi-submersible in order to improve vertical plane stability and the power output. Because of the ...
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Jun Ren and Qiuyu Cao
This paper proposes a method of structural modification for the assignment of natural frequencies and mode shapes based on frequency response functions (FRFs). The method involves the addition of masses or stiffness (supporting stiffness or connection st...
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Filiberto Muñoz, Jorge S. Cervantes-Rojas, Jose M. Valdovinos, Omar Sandre-Hernández, Sergio Salazar and Hugo Romero
This research presents a way to improve the autonomous maneuvering capability of a four-degrees-of-freedom (4DOF) autonomous underwater vehicle (AUV) to perform trajectory tracking tasks in a disturbed underwater environment. This study considers four se...
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Kefu Wang, Feng Li, Tao Zhou and Yiqun Ao
The aeroderivative gas turbine is widely used as it demonstrates many advantages. Adding hydrogen to natural gas fuels can improve the performance of combustion. Following this, the effects of hydrogen enrichment on combustion characteristics were analyz...
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Katherine A. Muller and C. Andrew Ramsburg
Among the most common amendments added to groundwater during site remediation are compounds used to adjust or maintain the pH. This research describes an approach to encapsulate mineral particles (MgO and CaCO3) within oil droplets suspended within an aq...
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Xifeng Gao, Zengwei Xu, Wanhai Xu and Ming He
Laboratory tests were carried out to investigate the cross-flow (CF) dynamic responses and hydrodynamic forces of a flexible pipe that subjected to vortex-induced vibration (VIV). The pipe had a critical mass ratio of 0.54 and an aspect ratio of 181.8. T...
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Mohamed Hechmi El Ouni, Mohamed Y. Laissy, Mohammed Ismaeil and Nabil Ben Kahla
The study aims to assess the impact of shear walls on active vibration control of the buildings. It has evaluated the design of a smart 20-story building equipped with an Active Mass Damper to mitigate earthquakes. The design has combined shear walls wit...
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Xianqing Liu, Yu Ding, Wenlong Li, Puyang Zhang, Kui Yu, Yutao Feng, Nan Lv and Sheng Luo
In recent years, multi-bucket foundations have been studied and gradually adopted in engineering practices as a novel foundation for offshore wind turbines within a range of water depth of 30 to 50 m. This study investigated the motion characteristics of...
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Rafel Roig, Xavier Sánchez-Botello and Xavier Escaler
Part 2 of this work presents a numerical methodology, validated using the experimental results presented in Part 1, to calculate the added modal coefficients of a submerged cylinder in water both when it oscillates and when it rotates with a whirling mot...
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