Assessment of the effect of biofilm on the ship hydrodynamic performance by performance prediction method

Farkas, Andrea; Degiuli, Nastia; Martić, Ivana

doi:10.1016/j.ijnaoe.2020.12.005

Cited by 27 publications

(17 citation statements)

References 35 publications

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“…Farkas et al said that they have developed a ship energy efficiency management system for inland ships. By collecting navigation data such as velocity, wind speed, and water depth, navigation attitude data such as ship speed, course, longitude, and latitude, and ship navigation energy consumption data, they have established a dynamic response model between ship energy efficiency and navigation environment, optimized ship speed, and improved energy efficiency [10]. technology is promoted to be applied on board.…”

Section: Literature Reviewmentioning

confidence: 99%

Configuration Generation Method of Ship End Program for Ship Energy Efficiency Management Platform

2022

Wireless Communications and Mobile Computing

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In order to solve the problem of collecting necessary data affecting fuel consumption and building an intelligent energy efficiency system, this paper makes an in-depth study on the management of cross ship energy efficiency on the basis of program configuration generation. Firstly, this paper studies three methods: technology-driven analysis, support vector machine method, and energy efficiency evaluation method. In order to improve the functions of energy management, energy efficiency analysis, and auxiliary decision-making, this paper constructs a comprehensive intelligent scheme for the best ship navigation energy efficiency from the aspects of ship operation guidance, navigation performance evaluation suggestions, and shipping management decision-making, so as to meet the higher-level management needs of interested parties for ship energy efficiency. Among them, energy efficiency online monitoring can collect energy efficiency data and serve the other three functions, mainly monitoring ship energy consumption, environment, navigation, and other parameters. Energy efficiency evaluation is based on the data collected by online monitoring, and the results of ship energy consumption are obtained by using data mining technology. Through experiments and research, under the background of green, efficient, and intelligent ships, ship shore collaboration is an effective way to improve the ship’s energy efficiency management ability. Intelligent ships provide a new development path for strengthening the application service of ship energy efficiency management system.

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Section: Literature Reviewmentioning

confidence: 99%

Configuration Generation Method of Ship End Program for Ship Energy Efficiency Management Platform

2022

Wireless Communications and Mobile Computing

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“…Th e results obtained from studying the eff ects of the geometry confi guration on the hydrodynamic performance of a propeller suggested an innovative way to design a propeller including the eff ects of the wake fl ow and skew angle on the propeller's features [11][12][13][14]. Other authors found the eff ects of the rudder shape on the propeller's hydrodynamic characteristics in the propeller-rudder system, from which they suggested a useful way to improve the hydrodynamic performance of the propeller [15][16].…”

Section: Introductionmentioning

confidence: 99%

Effects of Rudder and Blade Pitch on Hydrodynamic Performance of Marine Propeller Using CFD

Quang

Hung

Cong

et al. 2022

Polish Maritime Research

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The use of computational fluid dynamics (CFD) to predict internal and external flows has risen dramatically in the past decade. This research aims to use the commercial software, ANSYS Fluent V.14.5, to illustrate the effects of the rudder and blade pitch on the hydrodynamic performance of the marine propeller by experimenting with propellers and rudders of the M/V Tan Cang Foundation ship, which has designed conditions as follows: diameter of 3.65 m; speed of 200 rpm; average pitch of 2.459 m; boss ratio of 0.1730. Using CFD, the characteristic curves of the marine propeller and some important results showed that the maximum efficiency of the propeller is 0.66 with the open water propeller and 0.689 with the rudder‒propeller system at the advance ratio of 0.6. The obtained outcomes of this research are a significant foundation to calculate and design an innovative kind of propulsion for ships with high performance.

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“…Biofouling increases the ships' surface roughness, which results in increased frictional resistance up to 154% depending on the ship characteristics and biofouling type. The ship hulls covered with biofouling need more engine power in a range between 10% to 98% to cruise at the design speed compared to the clean ship hulls (Uzun, et al 2020;Uzun 2019;Demirel, et al 2017;Andersson, et al 2020;Farkas, et al 2021;García, et al 2020;Schultz 2007;Yeginbayeva et al, 2020). Increased fuel consumption causes an increase in GHG, which deteriorates the EEXI and carbon intensity indicator of existing ships.…”

Section: Introductionmentioning

confidence: 99%

Performance Comparison of Fouling Control Coatings Based on Time-Dependent Biofouling Model for Ships

Uzun

Turan

2022

Day 5 Thu, June 30, 2022

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The selection of the most efficient fouling control coating (FCC) for a new build ship in the design stage is significant for preventing extra fuel consumption and GHG emissions and crucial for preventing unscheduled maintenance operations. Not doing so may cause severe losses in the revenues throughout the operational life of the ship. For this reason, a tailor-made condition assessment in the design stage of the ship should be adopted while considering the ship operational profile and the target FCC performance. Such an approach becomes even more important considering the impact of the Energy Efficiency Existing Ship Index (EEXI) and Carbon Intensity Index (CII), which will come into force in 2023. The study presents the performance comparison of two fouling control coatings based on the time-dependent biofouling growth model. The analyses are conducted through two case studies in which the same ship is coated with two different fouling control coatings and operating at the same ship route and operating profile. The model first predicts the increases in the ship hull roughness in terms of equivalent sand roughness height, and then this prediction is implemented in the CFD based on the wall function approach. Finally, penalties in the frictional resistance and power requirements due to biofouling are calculated every three months duration in a year. The coating performances are compared in terms of increases in power requirements, fuel consumption and GHG emissions. The developed model enables us to select the most efficient FCC among the available FCC’s for the target ship route and operational profile. Maintenance and dry-docking schedules can also be optimised according to the developed model to operate ships in the most cost-effective and environmentally friendly way.

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Assessment of the effect of biofilm on the ship hydrodynamic performance by performance prediction method

Cited by 27 publications

References 35 publications

Configuration Generation Method of Ship End Program for Ship Energy Efficiency Management Platform

Configuration Generation Method of Ship End Program for Ship Energy Efficiency Management Platform

Effects of Rudder and Blade Pitch on Hydrodynamic Performance of Marine Propeller Using CFD

Performance Comparison of Fouling Control Coatings Based on Time-Dependent Biofouling Model for Ships

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