Relevant bibliographies by topics / Ship resistance

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  1. Journal articles

Academic literature on the topic 'Ship resistance'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 June 2025

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Journal articles on the topic "Ship resistance"

1

He, Ngo Van, Keisuke Mizutani, and Yoshiho Ikeda. "REDUCING AIR RESISTANCE ACTING ON A SHIP BY USING INTERACTION EFFECTS BETWEEN THE HULL AND ACCOMMODATION." ASEAN Engineering Journal 7, no. 1 (2014): 1–14. http://dx.doi.org/10.11113/aej.v7.15484.

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Nowaday, a study on saving energy as well as reducing resistance acting on a ship is important in maritime transportation. In this study, the authors present a study on reducing air resistance acting on a ship by using interaction effects between the hull and an accommodation. At first, air resistances acting on a hull and an accommodation of the ship are investigated by a commercial Computation Fluid Dynamic (CFD) code. Then, CFD results are compared with those of experimental results to validate the accuracy of the CFD. Secondly, air resistances acting on the ship with an accommodation on its deck are computed to obtain air resistances acting on the whole ships, on the hull and on accommodation. The results demonstrate that the interaction effects between the hull and its accommodation house be also shown how to reduce the total air resistance by using interaction effects between the hull and an accommodation house. The results can be applied in reducing the total resistances acting on a ship.
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2

Yang, Yunfei, Zhicheng Zhang, Jiapeng Zhao, et al. "Research on Ship Resistance Prediction Using Machine Learning with Different Samples." Journal of Marine Science and Engineering 12, no. 4 (2024): 556. http://dx.doi.org/10.3390/jmse12040556.

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Resistance serves as a critical performance metric for ships. Swift and accurate resistance prediction can enhance ship design efficiency. Currently, methods for determining ship resistance encompass model tests, estimation techniques, and computational fluid dynamics (CFDs) simulations. There is a need to improve the prediction speed or accuracy of these methods. Machine learning is gradually emerging as a method applied in the field of ship research. This study aims to investigate ship resistance prediction methods utilizing machine learning across various datasets. This study proposes two methods: employing stacking ensemble learning to enhance resistance prediction accuracy with identical ship samples and utilizing various ship resistance prediction models for accurate resistance prediction through transfer learning. Initially focusing on container ships as the research subject, the stacking ensemble learning model outperforms the basic machine learning model, the Holtrop and Mennen method, and the updated Guldhammer and Harvald method based on comparative prediction results. Subsequently, the container ship resistance prediction model achieves precise resistance prediction for bulk carriers. This study offers dependable guidance for applying machine learning in predicting ship hydrodynamic performance.
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3

Gutiérrez-Romero, José Enrique, and Jerónimo Esteve-Pérez. "Assessment of the Influence of Added Resistance on Ship Pollutant Emissions and Freight Throughput Using High-Fidelity Numerical Tools." Journal of Marine Science and Engineering 10, no. 1 (2022): 88. http://dx.doi.org/10.3390/jmse10010088.

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The reduction of ship pollutants is a key issue in the international agenda. Emissions estimation is usually based on standard calculations that consider the different scenarios of ships. This work presents research on the influence of added resistance on ship emissions and freight throughput. First, a methodology to assess the added resistance influence is shown. The procedure is applied to a roll on-roll off ship under two load conditions. Analyses are computed to value wind- and wave-added resistances for different seasons. An investigation on ship pollutant emissions for a whole route is performed. Moreover, the influence of added resistance on the ship freight throughput is analyzed. Finally, some relevant information is concluded. For instance, a difference of up to 53% in pollutant emission estimation is observed if added resistance is considered. Additionally, the navigation in added resistance conditions could lead to a freight loss of 18% per operational year.
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4

Huang, Jiayu, Feng Diao, Shifeng Ding, Sen Han, Pentti Kujala, and Li Zhou. "A Study on the Ice Resistance Characteristics of Ships in Rafted Ice Based on the Circumferential Crack Method." Water 16, no. 6 (2024): 854. http://dx.doi.org/10.3390/w16060854.

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In previous studies of ship–ice interactions, most studies focused on ship–level ice interactions, overlooking potential rafted ice conditions in extreme ice conditions. The purpose of this study is to develop a numerical model for predicting ship resistance in rafted ice regions. Numerical modeling of rafted ice was carried out using preset grid cells. By comparing the model test results, the accuracy and reliability of the numerical model are verified. On this basis, we undertook the analysis of the impacts of different ice thicknesses, ship speeds, bending strengths, and crushing strengths on the ice resistance of ships under level and rafted ice conditions. The results show that the ice resistance of ships is significantly higher than that of rafted ice under the condition of level ice; however, level ice and rafted ice have different effects on ship ice resistance. Compared with level ice, the ice resistance of ships navigating in rafted ice is more concentrated. The findings of the present research can serve as a technical reference for studies focused on predicting ship resistance in rafted ice regions.
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5

Ismail, Izzuddin Nadzir, Parlindungan Manik, and Mahendra Indiaryanto. "Effect of the Addition of Hydrofoil on Lift Force and Resistance in 60 M High-Speed Vessel." Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan 17, no. 3 (2020): 95–106. http://dx.doi.org/10.14710/kapal.v17i3.28772.

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The development of sea transportation technology is needed to meet the demand for ships that can carry heavier loads and operate at high speeds. Modifications in the form of additional hydrofoil variations were conducted to produce higher lift and reduce the resistance generated by the ship so that the ship can go more efficiently at high speed. This study aims to obtain the effect of adding hydrofoil to ships with variations in the type and shape of foil and find out which types and shapes can reduce resistance on the ship. This research was conducted with several model analysis tests using Computational Fluid Dynamic (CFD) based software, namely Tdyn, at several different speeds. The results of this study show that of the six variation models analyzed, rectangular fully submerged foil models can reduce the total resistance value of the ship by 17.822% from the original ship on Froude Number (Fr) 0.670. The type and shape of the foil is very influential on the lift and resistance produced by the ship.
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6

Jin, Chenhao. "Review on the ship drag reduction technology." Theoretical and Natural Science 19, no. 1 (2023): 275–80. http://dx.doi.org/10.54254/2753-8818/19/20230574.

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The development of the theory of turbulence has made a breakthrough in the application of drag reduction technology on ships, which contributes to energy saving and environmental protection. When a ship is sailing, it has to overcome resistance. Total resistance includes frictional resistance, wave-making resistance, and viscous pressure resistance, in which frictional resistance acts as the main resistance for low-speed ships, and for high-speed ships, the main resistance is wave-making resistance. This paper reviews the ship drag reduction technology by giving a brief introduction to drag reduction methods using grooves, bulbous bows, bubbles, hydrofoils, wall vibration, and high-polymer additive respectively, as well as their principles.
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7

Xie, Chang, Li Zhou, Mingfeng Lu, Shifeng Ding, and Xu Zhou. "Numerical Simulation Study on Ship–Ship Interference in Formation Navigation in Full-Scale Brash Ice Channels." Journal of Marine Science and Engineering 11, no. 7 (2023): 1376. http://dx.doi.org/10.3390/jmse11071376.

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Formation navigation in brash ice channels is increasingly utilized by merchant vessels in the Arctic and Baltic Sea, offering benefits such as improved efficiency and reduced carbon emissions. However, ship–ship interference poses a significant challenge to this method, impacting resistance performance. This paper presents full-scale simulations using the CFD–DEM coupling method in brash ice channels, which is validated by comparing simulation results with ice tank measurements. By varying the distance between two ships from 0.05 to 5 ship lengths, ship–ship interference in full-scale brash ice channels is analyzed using the CFD–DEM coupling strategy. The study examines hydrodynamic and ship–ice interactions, ice resistance effects, and simulation results. It is found that ship-to-ship distance significantly influences the velocity field, dynamic pressure distribution on the hull, and hydrodynamic interaction forces. Distances less than one ship length result in increased water resistance for the forward ship and decreased resistance for the rear ship. The forward ship demonstrates favorable interference with the ice accumulation of the rear ship. When distances are less than two ship lengths, the ice resistance of the forward ship remains mostly unaffected, while the ice resistance of the rear ship decreases as the distance decreases. These insights enhance our understanding of ship–ship interference in formation navigation, aiding in the optimization of brash ice channel navigation strategies.
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8

Xu, Xiao Ying, Chao Ying Meng, and Kuan Wang. "Resistance Performance Forecast of Trimaran Based on Multiple Regression Analysis." E3S Web of Conferences 261 (2021): 02072. http://dx.doi.org/10.1051/e3sconf/202126102072.

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Based on the multiple linear regression of the relevant data of 29 ships in the basic database, including cargo ship, oil ship, container ship and chemical ship, etc, the empirical estimation formula of resistance coefficient of single ship under different Fr was obtained. The feasibility of applying the above regression formula to the prediction of the resistance performance of the trimaran based on DTMB5415 is verified by comparison with CFD simulation data. This method has a strong engineering applicability and provides a new idea for the study of computer-aided layout optimization of the trimaran.
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9

Rachmianty, Andi, Suandar Baso, and Syamsul Asri. "The Influences of Lengthening Dimension of Ro-Ro Ferry Toward the Considerations of Hydrodynamics Characteristic and Loading Capacity Aspect." EPI International Journal of Engineering 2, no. 1 (2019): 41–45. http://dx.doi.org/10.25042/epi-ije.022019.08.

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The ferry business has become an important business segment for ship designers, builders and operators. Therefore, many ways have been done in order to increase ferry business through the proper design or converting ships by lengthening. This research is focused on the influences of lengthening a Ro-Ro ferry to hydrodynamics characteristic and loading capacity aspects. Moreover, the ships also are fixed in the same width and draft dimensions. The difference of the Ro-Ro ferries length is indicated by the addition of one column of car space where one column car space is given by car size including distance between car columns spaces which is an increment of every 5.88 meter. The total resistances of Ro-Ro ferries are obtained by ship model experiment in towing tank. There are 4 ship models that are made. The lengthening a Ro-Ro ferry is described into non-dimensional parameter by the ratio of ship length and displacement volume (L/V1/3). The hydrodynamics and the loading capacity of carried car aspects could be described into the ratio of resistance and loading capacity of carried car (RT/SUK) with ship speed. The research result shows that the lengthening of a Ro-Ro ferry affects on total resistance, speed, and loading capacity of carried car. The increase of total resistance is caused by higher residual resistance at high speeds and this is experienced by small length size. Therefore by lengthening the Ro-Ro ferry it could reduce total resistance in the same speed especially the residuary resistance but eventhough lengthening Ro-Ro ferry the effective speed should be considered. In additions, the effective speed for actual ships dimension in the same Rt/SUK 0.05 i.e. B5L10 is about 13.85 knot, B5L11 14.33 knot, B5L12 14.94 knot, and B5L13 15.45 knot respectively.
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10

Martić, Ivana, Nastia Degiuli, Andrea Farkas, and Ivan Gospić. "Evaluation of the Effect of Container Ship Characteristics on Added Resistance in Waves." Journal of Marine Science and Engineering 8, no. 9 (2020): 696. http://dx.doi.org/10.3390/jmse8090696.

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Added resistance in waves is one of the main causes of an increase in required power when a ship operates in actual service conditions. The assessment of added resistance in waves is important from both an economic and environmental point of view, owing to increasingly stringent rules set by the International Maritime Organization (IMO) with the aim to reduce CO2 emission by ships. For that reason, it is desirable to evaluate the added resistance in waves already in the preliminary ship design stage both in regular and irregular waves. Ships are traditionally designed and optimized with respect to calm water conditions. Within this research, the effect of prismatic coefficient, longitudinal position of the centre of buoyancy, trim, pitch radius of gyration, and ship speed on added resistance is investigated for the KCS (Kriso Container Ship) container ship in regular head waves and for different sea states. The calculations are performed using the 3D panel method based on Kelvin type Green function. The results for short waves are corrected to adequately take into account the diffraction component. The obtained results provide an insight into the effect of variation of ship characteristics on added resistance in waves.
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