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Topic Review
Analysis Floating Offshore Wind Platform Hydrodynamics Using SPIV
There is a need for new numerical tools to capture the physics of floating offshore wind turbines (FOWTs) more accurately to refine engineering designs and reduce costs. The conventional measurement apparatuses in tank tests, including wave probes, velocity and current profilers, and Doppler sensors, are unable to provide a full 3D picture of velocity, pressure, turbulence, and vorticity profile. In tank tests, the use of the underwater stereoscopic particle image velocimetry (SPIV) method to fully characterise the 3D flow field around floating wind platforms can overcome some of the limitations associated with classical measurement techniques and provide a rich source of validation data to advance high-fidelity numerical tools. The underwater SPIV method has been widely used for marine and offshore applications, including ship and propeller wakes, wave dynamics, and tidal stream turbines; however, to date, this technology has not seen widespread use for the hydrodynamic study of FOWTs. 
  • 219
  • 25 Jun 2023
Topic Review
Integration of NOMA-Based VLC with Emerging Technologies
Visible light communication (VLC), a high data rate communication technology, has proven its stature as a promising complementary to its radio frequency (RF) counterpart. VLC is a cost-effective, energy-efficient, and secure technology that exploits the current infrastructure, specifically within indoor and underwater environments. Non-orthogonal multiple access (NOMA) has been considered an effective technique to circumvent these shortcomings. The NOMA scheme has emerged as a revolutionary paradigm to address the shortcomings of VLC systems.
  • 818
  • 15 Mar 2023
Topic Review
Deep Learning Based Non-Orthogonal Multiple Access
Non-Orthogonal Multiple Access (NOMA) has become a promising evolution with the emergence of fifth-generation (5G) and Beyond-5G (B5G) rollouts. The potentials of NOMA are to increase the number of users, the system’s capacity, massive connectivity, and enhance the spectrum and energy efficiency in future communication scenarios.
  • 798
  • 14 Mar 2023
Topic Review
Design Concepts for Floating Offshore Wind Turbines
Offshore wind energy is a sustainable renewable energy source that is acquired by harnessing the force of the wind offshore, where the absence of obstructions allows the wind to travel at higher and more steady speeds. Offshore wind has recently grown in popularity because wind energy is more powerful offshore than on land. 
  • 5.0K
  • 10 Jan 2023
Topic Review
Deep-Sea Smart Composites
To solve the global shortage of land and offshore resources, the development of deep-sea resources has become a popular topic. Deep-sea composites are widely used materials in abyssal resources extraction, and corresponding marine exploration vehicles and monitoring devices for deep-sea engineering. In the process of deep-sea resources extraction by DUVs and marine engineering, cracks and fractures or other types of damage can occur due to the fatigue and aging of materials in harsh abyssal environments. With the expansion of cracks and fractures, the composite material splits could lead to the failure of composite structures. Traditional damage detection methods are limited by outdated equipment, low intelligence and poor timeliness, making it difficult to directly detect defects. To avoid irreversible disasters caused by fatigue and aging, and to reduce manpower and financial costs required for periodic inspection, it is necessary to adopt deep-sea smart composites to meet the existing needs.
  • 442
  • 29 Nov 2022
Topic Review
Coastal Erosion Risks Assessment on Yunlin Coast
A coastal erosion risk assessment was framed as the basis for the intervention of coastal adaptation strategies under time-variant scenarios. The framework was devised to assess the influence of coastal erosion on coastal defense, the coastal inundation induced by the erosion-induced malfunction of defense, and risks using a downscaling analysis and the mechanism of the compound hazard interaction, which are innovative and practical for the application of coastal management in Taiwan.
  • 256
  • 25 Nov 2022
Topic Review
The Optimal Configuration of Wave Energy Conversions
Ocean energy is one potential renewable energy alternative to fossil fuels that has a more significant power generation due to its better predictability and availability. In order to harness this source, wave energy converters (WECs) have been devised and used over the past several years to generate as much energy and power as is feasible. While it is possible to install these devices in both nearshore and offshore areas, nearshore sites are more appropriate places since more severe weather occurs offshore. Determining the optimal location might be challenging when dealing with sites along the coast since they often have varying capacities for energy production. Constructing wave farms requires determining the appropriate location for WECs, which may lead us to its correct and optimum design. The WEC size, shape, and layout are factors that must be considered for installing these devices. 
  • 444
  • 08 Nov 2022
Topic Review
High-Fidelity Computational Fluid Dynamics for Wind Turbines
The design and development of floating offshore wind turbines (FOWTs) is an attractive issue in the wind energy harvesting field. The FOWTs are considered more cost-effective than bottom-fixed offshore wind turbines in commercial operation with the significant technology advancements. However, several key factors for the design of FOWTs remain in need of more attention and effort. One of the key factors is the strong interaction between the wind turbine and floating platform. Unlike the bottom-fixed offshore wind turbines, the aerodynamics of FOWTs exhibits significant unsteady characteristics due to the floating platform motions excited by incident waves.
  • 502
  • 31 Oct 2022
Topic Review
Underwater Compressed Gas Energy Storage
Underwater compressed air energy storage was developed from its terrestrial counterpart. It has also evolved to underwater compressed natural gas and hydrogen energy storage in recent years. Underwater compressed air energy storage (UWCGES) is a promising energy storage technology for the marine environment and subsequently of recent significant interest attention.
  • 516
  • 11 Oct 2022
Topic Review
Ship Tracking Based on Satellite Videos
Ship detection and tracking have attracted a lot of attention in remote sensing because of the great potential in military application and port activities analysis. Compared with the vehicle targets, the size of the ship targets varies in a wide range, and the background of the track is commonly water, which may limit the performance of tracking methods. The feature of the water background is very similar to adjacent frames, which leads to ineffective motion information from the background analysis. Tracking algorithms such as optical flow-based tracker and offline tracking methods are thus not proper for ship tracking. Therefore, several novel models have been proposed to track ships from satellite videos.
  • 411
  • 26 Aug 2022
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