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Marco Altosole, Silvia Donnarumma, Valentina Spagnolo and Stefano Vignolo
The importance of mathematical and numerical simulation in marine engineering is growing together with the complexity of the designed systems. In general, simulation a makes it possible to improve the engineering design, reducing working time and costs o...
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Dimitra Anevlavi, Spiros Zafeiris, George Papadakis and Kostas Belibassakis
This work addresses the effects of blade tip-rake reformation on the performance of marine propellers using a low-cost potential-based vortex-lattice method (VLM) and the high fidelity artificial compressibility CFD-RANS solver MaPFlow. The primary focus...
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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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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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Y. M. Korol,O. M. Kornelyuk
Pág. 80 - 88
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Florian Vesting, Rickard E. Bensow, Rikard Johansson, Robert Gustafsson and Nicole Costa
The use of automated optimisation in engineering applications is emerging. In particular, nature inspired algorithms are frequently used because of their variability and robust application in constraints and multi-objective optimisation problems. The pur...
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Francisco Alves Pereira, Fabio Di Felice and Francesco Salvatore
An experimental study is carried out in a cavitation tunnel on a propeller operating downstream of a non-uniform wake. The goal of this work is to establish quantitative correlations between the near pressure field and the cavitation pattern that takes p...
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Ville Viitanen, Timo Siikonen and Antonio Sánchez-Caja
In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. The simulations were carried out using a homogeneous compressible two-phas...
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Kostas Belibassakis, John Prospathopoulos and Iro Malefaki
Flapping-foil thrusters are systems that operate at a substantially lower frequency compared with marine propellers and are characterized by a much smaller power concentration. These biomimetic devices are able to operate very efficiently, offering desir...
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M. I. Lamas and C. G. Rodriguez
The aim of the present paper is to provide the state of the works in the field of hydrodynamics and computational simulations to analyze biomimetic marine propulsors. Over the last years, many researchers postulated that some fish movements are more effi...
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Crístofer H. Marques, Jean-D. Caprace, Carlos R. P. Belchior and Alberto Martini
Increasing environmental demands, alongside the planned penetration of natural gas as marine fuel, have rendered dual-fuel engines as an attractive prime mover alternative. In this context, knowing the specific fuel consumption is essential to selecting ...
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Francesco Salvatore, Zohreh Sarichloo and Danilo Calcagni
A computational methodology for the hydrodynamic analysis of horizontal axis marine current turbines is presented. The approach is based on a boundary integral equation method for inviscid flows originally developed for marine propellers and adapted here...
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Francesco Salvatore, Zohreh Sarichloo and Danilo Calcagni
A computational methodology for the hydrodynamic analysis of horizontal axis marine current turbines is presented. The approach is based on a boundary integral equation method for inviscid flows originally developed for marine propellers and adapted here...
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Artur K. Lidtke, Maarten Klapwijk and Thomas Lloyd
Inflow turbulence is relevant for many engineering applications relating to noise generation, including aircraft wings, landing gears, and non-cavitating marine propellers. While modelling of this phenomenon is well-established for higher Mach number aer...
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Batuhan Aktas, Naz Yilmaz, Mehmet Atlar, Noriyuki Sasaki, Patrick Fitzsimmons and David Taylor
This study aims to demonstrate the merits of pressure-relieving holes at the tip region of propellers, which is introduced as ?PressurePoresTM? technology as a retrofit on marine propellers to mitigate tip vortex cavitation noise for a quieter propeller....
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Muye Ge, Urban Svennberg and Rickard E. Bensow
Sheet cavitation inception can be influenced by laminar boundary layer flow separation under Reynolds numbers regimes with transitional flow. The lack of accurate prediction of laminar separation may lead to massive over-prediction of sheet cavitation un...
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Jure Sr?e, Marko Perkovic and Aleksander Grm
The environmental effects of ship propellers were not even close to fully examined before the current massive ships were introduced to sea trade. Larger ships, result in greater length, beam, draft and propulsion power. Of concern here is the under-keel ...
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Jukka Tanttari and Antti Hynninen
Marine propulsors represent one of the most important contributors among anthropogenic sounds radiated into water. Blade based propulsors, e.g., propellers, generate tones at the blade passing frequency and its harmonics, especially in cavitating conditi...
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Hong-Sik Hwang, Kwang-Jun Paik, Soon-Hyun Lee and Gisu Song
Underwater radiated noise (URN) is greatly increasing due to an increase in commercial shipping, sonar activities, and climate change. As a result, marine life is having difficulty communicating, and marine ecosystem disturbances are occurring. The noise...
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Zhou Yang, Yuwang Xu, Jionglin Jing, Xuepeng Fu, Bofu Wang, Haojie Ren, Mengmeng Zhang and Tongxiao Sun
Particle image velocimetry (PIV) is a widely used experimental technique in ocean engineering, for instance, to study the vortex fields near marine risers and the wake fields behind wind turbines or ship propellers. However, the flow fields measured usin...
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