Integrated probabilistic design of marine propulsors to minimize lifetime fuel consumption

Motley, Michael R.; Nelson, Mayer; Young, Yin Lu

doi:10.1016/j.oceaneng.2012.01.032

Cited by 25 publications

(10 citation statements)

References 17 publications

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“…Slow steaming, which consists in sailing at lower speeds, is also a way to decrease the fuel consumption, as the ship power consumption is roughly proportional to the cube of its speed [3]. On the other hand, the ship energy efficiency can also be increased by improving the effectiveness of individual components, such as the engine [4], the propeller [5], and the hull [6]. Sails [7] and rotors [8] can be used as additional energy sources for propulsion, while fuel cells can be used for auxiliary power generation [9].…”

Section: Introductionmentioning

confidence: 99%

Technical and economic feasibility of organic Rankine cycle-based waste heat recovery systems on feeder ships: Impact of nitrogen oxides emission abatement technologies

Baldasso

Andreasen

Mondéjar

et al. 2019

Energy Conversion and Management

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Section: Introductionmentioning

confidence: 99%

Technical and economic feasibility of organic Rankine cycle-based waste heat recovery systems on feeder ships: Impact of nitrogen oxides emission abatement technologies

Baldasso

Andreasen

Mondéjar

et al. 2019

Energy Conversion and Management

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“…What is more, various trim conditions are also considered for the hull form optimization design not only for the original contract speed F r = 0.255 but also for slow speeds F r = 0.163–0.183 due to slow steaming by Park et al 18 Through their studies, the identification of the optimum trim condition meeting the objectives of ship operator can be achieved. Several similar probabilistic approaches considering speed and other factors for increasing ship lifetime efficiency have been investigated by Kramer et al, 19 Wagner et al, 20 Motley and collegues, 21,22 Eljardt, 23 and Terziev et al 24 In this article, the specific information about the probability of occurrence of the various operative conditions for both speed and displacement during the lifetime of the design is first derived and analyzed and then involved in evaluating the objective function implemented within the optimization framework.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental study on hydrodynamic bulbous bow hull-form optimization for various service conditions due to slow steaming of container vessel

Yin

Zeng

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part M:

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In this article, an innovative hydrodynamic optimization design of bulbous bow hull-form under various service conditions resulting from the slow steaming of container vessel is presented, improving the overall performances for the real multi-variant usage situations more practical than the single specification of design, which includes both numerical computation and experimental validation. Effects of slow steaming–based statistical analysis of the actual operative occurrence during the lifetime is conducted, obtaining a combined probability density distribution of speed and displacement ushering in the evaluation of objective function. Three main component elements of the hydrodynamic optimization procedure that comprises parametric design of bulbous bow hull-form variation part, hydrodynamic numerical solver part, and optimization technique part are established and integrated. The proposed optimization process is subsequently applied to find the optimal bulbous bow of a container carrier for the hipping demand of different speeds and displacement distributed utilization, reducing significantly total conditions resistance of the hull, on a higher level decreasing the operative cost as well as gas emissions of the ship. Finally, there is an experimental campaign carried out between the optimal and original models to validate the numerical optimization computations. The compared investigation has provided a good agreement from the perspective of both numerical and experimental studies, as a result confirming the success of the present optimization framework and the utility value of the proposed optimization consideration on various service conditions during ship design stage.

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“…In the recent years, some research was dedicated to reduce the LFC. Motley et al 28 considered the propeller, prime mover, and vessel as one integrated system and employed the probabilistic operational profile of the vessel to minimize the LFC. They evaluated the tradeoffs between different design objectives and constraints by considering the system performance characteristics along with the probability of occurrence, and hence allowed for the global optimization of the propeller geometry.…”

Section: Introductionmentioning

confidence: 99%

Ship hull–propeller system optimization based on the multi-objective evolutionary algorithm

Ghassemi

Zakerdoost

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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The optimization of the hull–propeller system of a ship has always been one of the most important aspects of design in order to reduce the costs, mechanical losses and increase the life of system components. The proposed design methodology represents a comprehensive approach to optimize the hull–propeller system simultaneously. In this study, two objective functions are considered, i.e. lifetime fuel consumption (LFC) and lifetime cost function (Cost). The mission profile of the vessel is adopted to minimize the LFC and Cost over their operational life. The well-known evolutionary algorithm based on NSGA-II is employed to handle the multi-objective problems, where the main propeller and hull coefficients are the unknown and are considered as design variables. The results are presented for a commercial container ship driven by B-series propeller. Three different engines with the same mission profile were taken and the results revealed that the proposed method is an appropriate and effective approach for finding Pareto optimal solutions distributed uniformly and is able to improve both of the objective functions significantly and other performances of the system.

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Integrated probabilistic design of marine propulsors to minimize lifetime fuel consumption

Cited by 25 publications

References 17 publications

Technical and economic feasibility of organic Rankine cycle-based waste heat recovery systems on feeder ships: Impact of nitrogen oxides emission abatement technologies

Technical and economic feasibility of organic Rankine cycle-based waste heat recovery systems on feeder ships: Impact of nitrogen oxides emission abatement technologies

Numerical and experimental study on hydrodynamic bulbous bow hull-form optimization for various service conditions due to slow steaming of container vessel

Ship hull–propeller system optimization based on the multi-objective evolutionary algorithm

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