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Changsheng Chen, Guoping Li, Zhenlai Ma, Ziyi Mei, Bo Gao and Ning Zhang
Podded propulsors have become a focal point of research in the field of marine propulsion in recent years due to their high efficiency, low noise, and excellent maneuverability. To investigate the acoustic characteristics induced by the flow field of pod...
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Yoo-Chul Kim, Kwang-Soo Kim, Seongmo Yeon, Young-Yeon Lee, Gun-Do Kim and Myoungsoo Kim
This study proposes machine learning-based prediction models to estimate hull form performance. The developed models can predict the residuary resistance coefficient (CR" role="presentation">????CR
C
R
), wake fraction (wTM" role="presentation">??????wTM...
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Woo-Seok Kwon, Quang Dao Vuong, Jae-Hyuk Choi, Jae-ung Lee, Ji-woong Lee, Sung Hwan Yoon, Antony John Nyongesa, Min-Ho Park, Seung-Kwon Yang and Won-Ju Lee
This research presents the transient torsional vibration due to cutting action of a propeller rope cutter. Therefore, a method to determine the safety diameter of connecting bolts was described regarding the fatigue strength of the propulsion system. The...
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Alessandro Zambon, Lorenzo Moro, Jeffrey Brown, Allison Kennedy and Dan Oldford
Polar navigation entails challenges that affect the continuation of ship operations in severe ice conditions. Due to ice-propeller interaction, propulsion shafting segments are often at a high risk of failure. Efficient methods for shaft line design are ...
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Maria Acanfora, Marco Altosole, Flavio Balsamo, Luca Micoli and Ugo Campora
The article deals with a simulation approach to the representation of the ship motions in waves, interacting with the propulsion system behavior (diesel engine and propeller). The final goal is the development of a simulator, as complete as possible, tha...
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Xidi Zhang, Zhihua Liu, Liushuai Cao and Decheng Wan
The occurrence of a tip leakage vortex (TLV) is a special phenomenon of ducted propellers, which has a significant influence on the propeller?s hydrodynamic performance and efficiency. The inception, evolution, and instability of the TLV under different ...
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Shin-Pyo Choi, Jae-Ung Lee and Jun-Bum Park
The enlargement of ships has increased the relative hull deformation owing to draft changes. Moreover, design changes such as an increased propeller diameter and pitch changes have occurred to compensate for the reduction in the engine revolution and con...
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Maurizio Arena, Antonio Chiariello, Martina Castaldo and Luigi Di Palma
One of the crucial issues affecting the structural safety of propeller vehicles is the propeller tonal excitation and related vibrations. Propeller rotation during flight generates vibrating sources depending upon its rotational angular velocity, number ...
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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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Myeong-Ho Song, Taek-Kun Nam and Jae-ung Lee
The reliability of propulsion shafting systems is a major concern for ocean-going vessels because mid-ocean repairs can be time-consuming and spare parts must be available. To address this concern, vibration modeling and experimental measurements were co...
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