Experimental and Numerical Investigation of Mooring Systems for Offshore Engineering

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

Deadline for manuscript submissions: 10 May 2024 | Viewed by 1034

Special Issue Editors

Yantai Research Institute, Harbin Engineering University, Yantai 264006, China
Interests: ocean engineering; floating structures; mooring system; riser; floating offshore wind turbine; wave energy converter; model test; nonlinear dynamic; artificial neural network

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Guest Editor
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
Interests: mooring; hydrodynamic; floating structures; hybrid model test method; wind and wave energy; motion control
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Guest Editor
College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Interests: ocean engineering; floating structures; mooring system; riser; floating offshore wind turbine; wave energy converter; model test; nonlinear dynamic; artificial neural network

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Guest Editor
Department of Ocean Engineering, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
Interests: naval and oceanic engineering; ocean platforms; hydrodynamics of lines in ocean environment; renewable energies

Special Issue Information

Dear Colleagues,

Background: The mooring system provides a reliable way to position the floating structures in a certain region for the resource development of ocean engineering. There are two main topics on the mooring system. The first is the study of the mooring line mechanics and characteristics, such as the mechanical analysis method, the polyester line material experiments, and high-quality chain tests. The other is the interaction between the floating structures and the mooring system. The coupling will lead to strong nonlinearity in the model tests and numerical research areas.

Aim and scope: The purpose of the invited Special Issue is to publish the most exciting research with respect to the mooring system numerical analysis and experiments for demonstrating a trend of concrete studies with numerical research and experiments in combination.

History: Since 1950, many experiments are carried out in model basins. Numerous valuable theories are proposed and make a contribution to now, such as the Morison equation and Cummins coupling motion equation. Meanwhile, the model test will be a powerful instrument for the development of ocean engineering.

Cutting-edge research: Now the dynamic characteristics of deepwater mooring system is still a huge obstacle to correctly simulating in the wave basin. At the same time, with the development of renewable structures, such as Floating Offshore Wind Turbines (FOWT), Wave Energy Converters (WEC), Farming Cages, and Offshore Photovoltaic (OPV) structures, the mooring system becomes varied, which is a new challenge for the mooring simulations and model tests. In recent years, the artificial neural network has rapid development, which is also a valuable tool to solve some problems of mooring systems.

The mooring system plays an important role in the exploration of oil, gas and renewable resources in offshore engineering. It provides a positioning capacity to make sure the platforms are within a designed safe region. The mooring line may consist of chains, steel wire ropes, and polyester lines, together with some weights and buoys. Each of them has unique static and dynamic properties, even visco-elastic material characteristics. Additionally, usually, the mooring system works with a floating structure, like Floating Production Storage and Offloading Unit (FPSO), SEMI platform, Floating Offshore Wind Turbine (FOWT), Wave Energy Converter (WEC), Farming cage, Offshore Photovoltaic (OPV), etc. The coupling response between them shows a strong nonlinear relationship. So numerical and experimental studies are encouraged to improve the related developments.

The Special Issue focuses on the static and dynamic response of the mooring system and its connected floating structures with a numerical and experimental study. In this regard, this Special Issue aims to present the latest research and development in Experimental and Numerical Investigation of Mooring Systems for Offshore Engineering. High-quality papers are encouraged for publication regarding, but not limited to, the topics below.

  • Model tank experiments on mooring/cable system
  • Material experiments on synthetic mooring lines
  • Mechanical experiments on single point mooring system
  • Numerical research on mooring system
  • Hydrodynamic Interaction between mooring system and floating structures
  • Artificial neural network for tension estimation

Dr. Gang Ma
Dr. Dongsheng Qiao
Dr. Hongwei Wang
Prof. Dr. Antonio Carlos Fernandes
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

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Keywords

  • mooring model test 
  • floating structures 
  • truncation with dynamic similarity 
  • numerical simulation method 
  • artificial neural network

Published Papers (1 paper)

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Research

19 pages, 4690 KiB  
Article
Numerical Study on Wave Dissipation and Mooring Force of a Horizontal Multi-Cylinder Floating Breakwater
by Zhipeng Zang, Zhuo Fang, Kuan Qiao, Limeng Zhao and Tongming Zhou
J. Mar. Sci. Eng. 2024, 12(3), 449; https://doi.org/10.3390/jmse12030449 - 01 Mar 2024
Viewed by 663
Abstract
A three-dimensional numerical model was established based on ANSYS-AQWA (R19.0) software for the purpose of analyzing the hydrodynamic characteristics of a floating breakwater. This study examines three distinct floating breakwaters with different cross-sectional designs in order to evaluate their respective wave dissipation capabilities. [...] Read more.
A three-dimensional numerical model was established based on ANSYS-AQWA (R19.0) software for the purpose of analyzing the hydrodynamic characteristics of a floating breakwater. This study examines three distinct floating breakwaters with different cross-sectional designs in order to evaluate their respective wave dissipation capabilities. It is suggested that the horizontal multi-cylinder floating breakwater exhibits a superior ability to dissipate waves when compared to both the single-cylinder and square pontoon configurations and can be deemed the most advantageous shielding strategy for potential engineering applications. Subsequently, this study examines the effects of influential parameters, including a large cylinder diameter, a small cylinder diameter, the angular position of the small cylinder, and the height and period of the incident wave, on the wave transmission coefficient. An empirical formula for the wave transmission coefficient was derived based on the numerical results. Additionally, the effects of influential parameters, including wind speed, current velocity, incident wave height and period, and water depth, on the maximum total mooring force were investigated. Furthermore, an empirical formula for the maximum total mooring force is proposed for practical implementation in engineering. Full article
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