Hydrodynamics and Safety Issues in Modern Ship Design

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: closed (25 May 2024) | Viewed by 5050

Special Issue Editors


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Guest Editor
Department of Engineering and Architecture, University of Trieste, 34127 Trieste, Italy
Interests: CFD modelling; offshore structures; hydrodynamics; optimisation algorithms; neural networks; ship hull design
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Guest Editor
Sharjah Maritime Academy, Khor Fakkan, United Arab Emirates
Interests: intact and damage stability; ship safety; ship design; ship hydrodynamics
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Industrial Engineering, University Federico II of Naples, Via Claudio 21, 80125 Naples, Italy
Interests: ship stability in waves; second generation intact stability criteria; surf-riding phenomenon; wave energy converter; large yachts quality assessment

Special Issue Information

Dear Colleagues,

The design of a ship is a complex process involving multiple aspects of naval architecture and marine electrical/electronic, mechanical, process, and ocean engineering; it is a system of systems. Therefore, ship design is a synthesis of those aspects, and proper methods should be employed to consider all these aspects, starting with the preliminary stages of a new design where information is limited. Such a process requires, among many other aspects, the development of adequate methodologies capable of making this synthesis, providing designers with the best compromised solutions between competing objectives and characteristics that determines optimal ship designs accounting for performance, functionality, safety, and cost, the customarily adopted design objectives. Undergoing a fast pace of change means that experiential knowledge becomes progressively less relevant as there is not enough time to gather any requisite experience. Therefore, engineering a design methodology based on first-principles analyses and tools in a way that provides the requisite fidelity to make the right choices at the early design stage is of the utmost importance.

In the present Special Issue, the focus is on ship performance aspects related to hydrodynamics and safety as the first key steps influencing the design of a modern ship. In this respect, accounting for new targets and regulations for emissions and fuel consumption, design implications, and solutions will be considered within the framework of second-generation intact stability criteria and potential loss of life from a damage stability perspective whilst accounting for comfort issues. Papers addressing the development and application of the aforementioned topics in the design of a ship are welcome.

Dr. Francesco Mauro
Prof. Dr. Dracos Vassalos
Dr. Barbara Rinauro
Guest Editors

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Keywords

  • ship design
  • ship hydrodynamics
  • safety
  • intact stability
  • damage stability
  • crashworthiness
  • data-driven processes
  • surrogate models

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Published Papers (3 papers)

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Research

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15 pages, 3074 KiB  
Article
Design of Ship Trajectory Control Method Integrating Self Disturbance Rejection and Neural Network
by Luyu Luo, Lei Zhang and Zheng Gu
J. Mar. Sci. Eng. 2024, 12(7), 1149; https://doi.org/10.3390/jmse12071149 - 9 Jul 2024
Cited by 1 | Viewed by 990
Abstract
To reduce the ship trajectory control difficulty, a ship trajectory control method based on active disturbance rejection control and radial basis function neural network is designed. Firstly, a separated model structure is proposed to model the ship’s navigation system, followed by the introduction [...] Read more.
To reduce the ship trajectory control difficulty, a ship trajectory control method based on active disturbance rejection control and radial basis function neural network is designed. Firstly, a separated model structure is proposed to model the ship’s navigation system, followed by the introduction of active disturbance rejection control technology to control the ship’s trajectory, and the fusion of radial basis function to improve the parameter adjustment effect. It was found that on the AIS and MSSIS datasets when the system was iterated 25 and 22 times, respectively, the fitness values of the research method were as high as 99.46 and 99.51. In addition, when the accuracy of all algorithms was 0.900, the recall rate of the research method was significantly the highest, at 0.752. When the recall rate was 0.900, the accuracy of the research method was significantly the highest, reaching 0.869. In practical applications, when there was no external interference, the heading was a square wave signal, and when the time reached 90.11, the proposed method operated with a small difference between the planned heading and the actual heading. In addition, it was found that the control effect of the research method on ship operation remains highly stable when external interference is added during ship operation. The above results indicate that the designed method has significant advantages in ship trajectory control tasks and can effectively enhance the navigation safety and stability of ships. Full article
(This article belongs to the Special Issue Hydrodynamics and Safety Issues in Modern Ship Design)
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18 pages, 6659 KiB  
Article
The Role of Zone Models in the Numerical Prediction of Fire Scenario Outcomes Onboard Passenger Ships
by Ahmed Salem, Francesco Mauro and Dracos Vassalos
J. Mar. Sci. Eng. 2024, 12(1), 26; https://doi.org/10.3390/jmse12010026 - 21 Dec 2023
Cited by 2 | Viewed by 1506
Abstract
Fire models are categorised as zone models and field models. Field models excel in accuracy, whereas zone models outperform field models in terms of computational time and cost efficiency. Through comparison between Consolidated Fire and Smoke Transport (CFAST), representing zone models, and Fire [...] Read more.
Fire models are categorised as zone models and field models. Field models excel in accuracy, whereas zone models outperform field models in terms of computational time and cost efficiency. Through comparison between Consolidated Fire and Smoke Transport (CFAST), representing zone models, and Fire Dynamics Simulator (FDS), a benchmark field model, the research discussed in this paper investigates the feasibility of employing zone models to predict the consequences of a potential fire scenario on an accommodation deck of a reference small passenger ship. Such a comparison is the first attempt to study the differences between the two modelling techniques for cruise ships. The findings of this research indicate that CFAST predictions align well with FDS results in the room of fire origin, the cabin. However, the agreement between CFAST and FDS results gradually weakens when continuous spaces are modelled as contiguous compartments like in connected corridors. This study suggests that zone models can serve as a tool for conducting fast conservative comparisons between established rule-based designs and potential alternative designs, particularly concerning the life safety of crew and passengers of small passenger ships. Such simplified models adapt well to their possible future application to extensive safety risk analyses for passenger ships. Full article
(This article belongs to the Special Issue Hydrodynamics and Safety Issues in Modern Ship Design)
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21 pages, 8665 KiB  
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Study on the Estimation Method of Wind Resistance Considering Self-Induced Wind by Ship Advance Speed
by Hyounggil Park, Pyungkuk Lee, Jinkyu Kim, Heejung Kim, Heedong Lee and Youngchul Lee
J. Mar. Sci. Eng. 2024, 12(10), 1694; https://doi.org/10.3390/jmse12101694 - 24 Sep 2024
Cited by 2 | Viewed by 1537
Abstract
A numerical analysis of the wind load for the purpose of evaluating the wind resistance acting on a ship and the validity of the wind profile applied to determine the wind load coefficient were conducted. Through the evaluation of estimation results by a [...] Read more.
A numerical analysis of the wind load for the purpose of evaluating the wind resistance acting on a ship and the validity of the wind profile applied to determine the wind load coefficient were conducted. Through the evaluation of estimation results by a wind tunnel test, CFD analysis, and present semi-empirical formulae, it was recognized that the difference in estimation of ship resistance due to wind could not be ignored. In order to identify the main causes of the difference, extensive analyses were performed for a container, tanker, and LNG carrier. In particular, the estimation results for a container ship with two islands showed unreliable results. The main reason for the difference is that each method reflects the wind speed in the vertical direction differently, and the wind profile applied when considering the self-induced wind effect is not a uniform wind profile. In the calculation of wind resistance by self-induced wind, wind resistance estimation results differed by about 1.5% to 3.4% depending on the application of uniform or non-uniform wind profile. The total wind resistance acting on the vessel shall be divided into wind resistance from a stationary vessel without speed and wind resistance caused by the forward speed of the vessel in no wind conditions. Therefore, it is reasonable to apply a uniform wind profile to estimate wind resistance caused by the ship’s forward speed, while a wind profile that reflects the effect of changes in the ship’s vertical speed should be applied to estimate the wind resistance caused by the ship’s forward speed. Full article
(This article belongs to the Special Issue Hydrodynamics and Safety Issues in Modern Ship Design)
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