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Understanding of Oceanic Hydrodynamics and Coastal Hazards for Sustainable Engineering and Energy Solutions

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Oceans".

Deadline for manuscript submissions: closed (1 September 2023) | Viewed by 5484

Special Issue Editor


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Guest Editor
1. Ocean College, Zhejiang University, Zhoushan 316021, China
2. Hainan Institute of Zhejiang University, Sanya 572024, China
Interests: coastal hazards; tsunami; storm surge; storm waves; oceanic hydrodynamics; numerical wave modeling

Special Issue Information

Dear Colleagues,

Today, more than one-third of the world’s population lives within 100 kilometers of a nearby shoreline, and more than half of the world’s 20 largest cities are located on the coast. These megacity clusters with high population concentrations scatter across various coastal economic belt, and play a fundamental role in providing a high-quality living environment and driving rapid social and economic growth. However, under the impact of global climate change, the rapid growth of coastal regions faces two distinct challenges: security and energy. On the one hand, more severe coastal developments—including the accelerated sea-level rise, increase in sea surface temperature, the intensification of tropical and extratropical cyclones, aggravated extreme waves and storm surges, altered precipitation and runoff, and other coastal hazards—expose low-lying area and existing coastal defense structures to high risks. On the other hand, the reduction in fossil fuel consumption and perpetually surging demand in electricity are pushing the transition of energy supply towards renewable ocean energy, such as wind, wave, and tidal power; however, the energy reserve, distribution, and reliability of these ocean resources have been evolving differently than before. Therefore, understanding oceanic hydrodynamics and coastal hazards is pivotal in the application of engineering and energy solutions for the sustainable development of coastal regions.

This Special Issue seeks to promote knowledge on oceanic hydrodynamics (wind, wave, tide, current, etc.) and coastal hazards (tropical cyclones, storm surge, high waves, tsunamis, sea level rise, etc.) in response to natural coastal landscapes, coastal navigation, defense structures, and energy-harvesting sites and facilities. The Special Issue also aims to disseminate insights on the comprehensive assessment of specific renewable ocean energy (wind power, wave power, tidal power, etc.) from the analysis of long-term hydrodynamic data and an impact evaluation of power acquisition platforms from extreme hazardous events. Disciplinary-specific, multidisciplinary, and transdisciplinary research works conducted theoretically, experimentally, or numerically are all welcome to address the issues surrounding both security and energy within the scope of oceanic hydrodynamics and coastal hazards, providing constructive solutions with strong application perspectives for building a sustainable and resilient coast.

Prof. Dr. Yefei Bai
Guest Editor

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Keywords

  • coastal hazards (tropical cyclones, storm surges, high waves, earthquakes, tsunamis, landslides, and sea level rise)
  • coastal engineering (breakwater, revetment, and seawall)
  • oceanic hydrodynamic environment (wind, wave, tide, and current)
  • renewable ocean energy
  • risk assessment and hazard mitigation
  • climate change

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Published Papers (2 papers)

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Research

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13 pages, 10178 KiB  
Article
Preventative Biofouling Monitoring Technique for Sustainable Shipping
by Dalian Wu, Jian Hua, Shun-Yao Chuang and Junseng Li
Sustainability 2023, 15(7), 6260; https://doi.org/10.3390/su15076260 - 6 Apr 2023
Cited by 4 | Viewed by 1907
Abstract
Monitoring and evaluating the biofouling status of a ship’s hull and its effects on the vessel’s performance attracts the attention of both researchers and industry. In this study, two types of monitoring equipment were used to observe organism growth on two fishing vessels [...] Read more.
Monitoring and evaluating the biofouling status of a ship’s hull and its effects on the vessel’s performance attracts the attention of both researchers and industry. In this study, two types of monitoring equipment were used to observe organism growth on two fishing vessels for approximately six months. Combining underwater photography technology with periodic cleaning methods can effectively prevent the occurrence of problems including hull biofouling. The monitoring system developed in this study is cheap and easy to operate, and can be stored on board and regularly operated by the crew to eliminate various issues below the waterline, which in turn enhances sustainable shipping. Full article
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Review

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28 pages, 11585 KiB  
Review
A Review: Design and Optimization Approaches of the Darrieus Water Turbine
by Guanghao Li, Guoying Wu, Lei Tan and Honggang Fan
Sustainability 2023, 15(14), 11308; https://doi.org/10.3390/su151411308 - 20 Jul 2023
Cited by 1 | Viewed by 3172
Abstract
As the use of Darrieus turbines in water is becoming increasingly popular in the field of renewable energy, it is essential to explore and evaluate existing research efforts. The situation of the Darrieus water turbine in water still requires further discussion. This paper [...] Read more.
As the use of Darrieus turbines in water is becoming increasingly popular in the field of renewable energy, it is essential to explore and evaluate existing research efforts. The situation of the Darrieus water turbine in water still requires further discussion. This paper aims to provide a comprehensive review of optimization methods for Darrieus water turbines, addressing the challenges associated with their efficiency, start-up, and stability. This work summarizes and evaluates the findings of previous studies, focusing on the features of experimental and numerical methods. Influence of geometric parameters, including height-diameter ratio, solidity, torsional angle, and airfoil are also talked into. The existing research adopts solidity values ranging from 0.1 to 0.4, but the design experience is not as extensive as that of the Darrieus wind turbine. Further discussions are still needed on the optimal power coefficient and tip speed ratio of the Darrieus water turbine. The research with a power coefficient ranging from about zero to above the Betz limit needs further summarization. Various optimization strategies, such as multi-turbine arrangement, coupling with Savonius turbines, and blade pitching, are also discussed. By offering insights into the current state of optimization works for Darrieus water turbines, this review aims to facilitate future research, bridge existing gaps in the field, further enrich the utilization of ocean currents, and improve the structure of renewable energy. Full article
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