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Nabila Berchiche, Vladimir I. Krasilnikov and Kourosh Koushan
In the present work, a generic ducted azimuth propulsor, which are frequently installed on a wide range of vessels, is subject to numerical investigation with the primary focus on performance deterioration and dynamic loads arising from the influence of ...
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David Quero, Pierre Vuillemin and Charles Poussot-Vassal
In this work, a new approach for the generation of a generalized state-space aeroservoelastic model based on tangential interpolation is presented. The resulting system of differential algebraic equations (DAE) is reduced to a set of ordinary differentia...
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David Quero, Pierre Vuillemin and Charles Poussot-Vassal
In this work, a new approach for the generation of a generalized state-space aeroservoelastic model based on tangential interpolation is presented. The resulting system of differential algebraic equations (DAE) is reduced to a set of ordinary differentia...
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Huixue Dang, Jiang Xu, Wei Wang, Xiaochen Wang, Bin Li, Ruizhi Cao, Liuhong Kang and Zhichun Yang
Civilian aircraft can experience noticeable vibrations in the cockpit and cabin due to mechanical faults during flight. To address this issue, a hybrid approach was utilized to investigate fluid-induced vibration load characteristics in the front landing...
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Khiem Van Truong
To fulfill the objective of a predictive tool for rotorcraft, comprehensive analysis (CA) needs to be capable of providing both accurate and time-efficient predictions of rotor air loads and structural loads. The more recent methodology based on comprehe...
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Khiem Van Truong
To fulfill the objective of a predictive tool for rotorcraft, comprehensive analysis (CA) needs to be capable of providing both accurate and time-efficient predictions of rotor air loads and structural loads. The more recent methodology based on comprehe...
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Michael Thome, Ould el Moctar and Thomas E. Schellin
Comparative hydrodynamic loads caused by a focused wave acting on differently sized slender vertical cylinders placed in a wave canal were predicted at model scale using an unsteady Reynolds-averaged Navier?Stokes (URANS) solver and the Morison equation....
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Zawar Haider, Rafic M. Ajaj and Lakmal Seneviratne
This paper presents an aeroelastic analysis of a polymorphing wing capable of active span extension and passive pitch variation. The wing is split into two segments: an inboard segment responsible for span extension/retraction and an outboard segment cap...
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Lucian Hanimann, Luca Mangani, Ernesto Casartelli, Elmar Gröschel and Magnus Fischer
The demand for increased turbomachinery performance, both, towards higher pressures and temperatures, leads to high thermal-loads of specific components and can critically affect mechanical integrity. In the particular case of rotating-disk configuration...
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Marco Berci
Enhanced approximate expressions for the incipient indicial lift of thin wings in subsonic potential flow are presented in this study, featuring explicit analytical corrections for the unsteady downwash. Lifting-line and acoustic-wave theories form the b...
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Iro Malefaki and Kostas Belibassakis
Biomimetic flapping-foil thrusters can operate efficiently while offering desirable levels of thrust required for the propulsion of a small vessel or an Autonomous Underwater Vehicle (AUV). These systems have been studied both as main propulsion devices ...
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Tsung-Yueh Lin, Chun-Yu Yang, Shiu-Wu Chau and Jen-Shiang Kouh
Typhoons, such as Soudelor, which caused the collapse of several onshore wind turbines in 2015, pose a considerable challenge to Taiwan?s wind energy industry. In this study the characteristics of the aerodynamic loads acting on a wind turbine due to win...
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Florian Hermet, Nicolas Binder, Jérémie Gressier and Gonzalo Sáez-Mischlich
A preliminary analysis of turbine design, fit for pulsed flow, is proposed in this paper. It focuses on an academic 2D configuration using inviscid flows, since pressure loads due to wave propagation are several orders of magnitude higher than friction a...
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Jialong Jiao and Songxing Huang
Accurate prediction of ship seakeeping performance in complex ocean environment is a fundamental requirement for ship design and actual operation in seaways. In this paper, an unsteady Reynolds-averaged Navier?Stokes (RANS) computational fluid dynamics (...
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Luigi Mongibello, Nicola Bianco, Martina Caliano and Giorgio Graditi
Thermal energy storage systems can be determinant for an effective use of solar energy, as they allow to decouple the thermal energy production by the solar source from thermal loads, and thus allowing solar energy to be exploited also during nighttime a...
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Hadar Ben-Gida
Weapons bays have gained much attraction in the last decade, mainly in the context of next-generation aircraft. Although internal store carriage provides numerous advantages, aero-mechanical challenges still exist, particularly for safe store separation....
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Renguo Yang, Yadong Gao, Huaming Wang and Xianping Ni
In order to further reduce the vibration level of helicopters, the active vibration control technology of helicopters has been extensively studied. Among them, individual blade control (IBC) independently applies high-order harmonics to each blade with a...
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Martin Moreau, Grégory Germain and Guillaume Maurice
The cost effective design of tidal turbines requires a good estimation of the loading cycles and their extrema that are related to the unsteady fluctuation of the current velocity. Apart from the ambient turbulence, the main source of velocity fluctuatio...
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Jens Ley and Ould el Moctar
Ship hull structural damages are often caused by extreme wave-induced loads. Reliable load predictions are required to minimize the risk of structural failures. One conceivable approach relies on direct computations of extreme events with appropriate num...
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Danilo Calcagni, Giulio Dubbioso, Alessandro Capone, Fabrizio Ortolani and Riccardo Broglia
During maneuvers, propellers? operation differs from their design due to strong modification of the wake field with respect to the straight-ahead motion. The consequent modification of the loads overstresses the mechanical components of the shaftline, ex...
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