Article
Chemistry, Analytical
Donghan Woo, Nam-Kyun Im
Summary: This study proposes a method to evaluate the safety of passenger ships' stability by calculating stability parameters and providing real-time decision support system to alert potential hazards to the crew.
Article
Engineering, Marine
Augustijn Degrieck, Bryan Uyttersprot, Serge Sutulo, Carlos Guedes Soares, Wim Van Hoydonck, Marc Vantorre, Evert Lataire
Summary: The study investigates hydrodynamic interactions between ships or between ships and banks using numerical methods. Results from different computational methods show good predictions for ship-ship interactions but fail to accurately predict ship-bank interactions. Errors increase at close distances to the bank or another ship, particularly in cases with large drift angles.
Article
Computer Science, Artificial Intelligence
Ulku Ozturk, Hasan Alp Boz, Selim Balcisoy
Summary: This study introduces a tangible visual analytic tool for analyzing maritime traffic using AIS data, providing insights into the safety structure of fairways and individual ships while also capturing real accident cases. Analysis of AIS trajectory from the Mexican Gulf revealed significant variations in the spatio-temporal position pattern of encountered ships in Port Houston, as well as a spatial distribution of ship accidents coinciding with proposed near-miss density areas. Field experiments with domain experts showed that the approach helps in making realistic inferences about navigational safety behavior.
EXPERT SYSTEMS WITH APPLICATIONS
(2021)
Review
Engineering, Marine
Blanca Pena, Luofeng Huang
Summary: Ship operations are influenced by turbulent regimes that have a significant impact on hydrodynamic characteristics. Computational technologies have advanced to allow for detailed numerical simulations of turbulent ship flows, but the high computational costs and lack of updated recommendations for turbulence modeling present challenges. This paper reviews the current state-of-the-art turbulence modeling for ship hydrodynamic applications, introducing various approaches and discussing their applicability and limitations in different ship simulation scenarios. The goal is to provide guidance for CFD users in selecting turbulence modeling strategies and advancing the field.
Article
Engineering, Civil
Hongchu Yu, Alan T. Murray, Zhixiang Fang, Jingxian Liu, Guojun Peng, Mohammad Solgi, Weilong Zhang
Summary: This study aims to optimize unmanned ship routes using geographical theory and methodologies to enhance the safety and efficiency of maritime transportation. Automatic collision avoidance and compliance with maritime traffic rules remain challenges, but the development of unmanned ships will promote the future growth of intelligent ports.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Review
Engineering, Marine
Claire DeMarco Muscat-Fenech, Tonio Sant, Vito Vasilis Zheku, Diego Villa, Michele Martelli
Summary: The hydrodynamic interaction between ships in harbours or inland waterways is a classical research area. Numerical simulation has become the most widely adopted method to investigate this problem.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Review
Engineering, Marine
Julio Barreiro, Sonia Zaragoza, Vicente Diaz-Casas
Summary: This paper aims to provide an overview of the current state of energy efficiency in the marine sector, covering both individual ships and the industry as a whole. The study examines the regulatory framework for energy efficiency in the shipping sector, explores measures implemented on ships to reduce consumption and emissions, investigates potential industry-wide advances, and discusses the main obstacles to implementing these measures.
Article
Multidisciplinary Sciences
Miroslaw Wielgosz, Zbigniew Pietrzykowski
Summary: This paper discusses the key criterion of distance in the assessment of movement safety and specifically addresses the criteria in sea transport. The authors define the relationship between declared and effective domains using a mathematical function, allowing for the determination of an effective passing distance. These findings can be applied in various decision support systems and ship control centers to enhance ship movement safety.
Review
Energy & Fuels
Luka Noc, Ivan Jerman
Summary: In this article, different types of mid- and high-temperature CSP absorber coatings and their fabrication methods are reviewed. Important factors for an efficient CSP absorber include compatibility of the coating and substrate under cyclic temperature conditions and high heat transfer rate. Spectral selectivity of the coatings is essential for low-to-mid temperature range and low concentration ratios, while high solar absorptive coatings can achieve similar or even better performance for high temperatures and high concentration ratios.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Review
Food Science & Technology
Faezeh Fathi, Samad N. Ebrahimi, Luis Carlos Matos, M. Beatriz P. P. Oliveira, Rita C. Alves
Summary: This review provides an overview of common drying techniques with a focus on maintaining the features of active phytoconstituents and improving their release and storage stability. Spray drying encapsulation is a promising method to improve the texture and morphology of dried materials and increase storage times.
COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY
(2022)
Article
Engineering, Marine
D. Vassalos, D. Paterson, F. Mauro
Summary: This study proposes a multi-level flooding risk assessment framework using a real-time flooding risk evaluation methodology based on first-principles calculations. The framework applies throughout the whole vessel life-cycle and separates predictions into Level-1 based on semi-empirical models and databases, and Level-2 based on the concept of Potential Loss of Life (PLL). The developed method demonstrates the suitability of the approach and tools for real-time calculation of flooding risk.
Article
Engineering, Marine
Nam-Kyun Im, Hun Choe
Summary: The IMSISA model was developed to assess ship stability by calculating ten stability parameters and providing stability guidelines to captains based on a stability index. The model showed better performance in stability assessment compared to previous studies, allowing captains to evaluate ship stability more efficiently and quantitatively.
INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING
(2021)
Article
Engineering, Marine
Dracos Vassalos
Summary: This paper provides a methodological treatment of damaged ship dynamics and offers solutions to address the risk of flooding, aiming to reinforce the importance of safety.
SHIPS AND OFFSHORE STRUCTURES
(2022)
Review
Automation & Control Systems
Thomas Heitz, Ning He, Ni Chen, Guolong Zhao, Liang Li
Summary: This paper is a review of recent and relevant research in the field of dynamics in micro-milling processes, providing revised definitions, discussions on mathematical concepts, common phenomenon impacts, detection and suppression methods for vibration and chatter, as well as addressing remaining challenges. The paper fills a research gap in the field of dynamics specifically related to micro-milling.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Environmental Sciences
Shouyuan Zhang, Hongyu Cheng, Ziming Deng, Lingqin Mei, Leyu Ding, Chao Guo, Xin Wang, Gensheng Zhao
Summary: This study analyzes the characteristics of unpowered coasting distance for ten-thousand-ton bulk carriers in tunnels and proposes a vessel-following model based on car-following theory, which greatly enhances the navigable safety and operational efficiency of ship tunnels.
Article
Engineering, Marine
Chiara Wielgosz, Anders Rosen, Raju Datla, Uihoon Chung, Jonas Danielsson
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART M-JOURNAL OF ENGINEERING FOR THE MARITIME ENVIRONMENT
(2020)
Article
Computer Science, Artificial Intelligence
Yisi Liu, Zirui Lan, Jian Cui, Gopala Krishnan, Olga Sourina, Dimitrios Konovessis, Hock Eng Ang, Wolfgang Mueller-Wittig
ADVANCED ENGINEERING INFORMATICS
(2020)
Article
Engineering, Industrial
Mei Ling Fam, Xuhong He, Dimitrios Konovessis, Lin Seng Ong
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2020)
Article
Engineering, Industrial
Igor Backalov
Article
Engineering, Marine
Gabriele Bulian, Mike Cardinale, George Dafermos, Daniel Lindroth, Pekka Ruponen, George Zaraphonitis
Article
Engineering, Marine
Panayiotis Theodoropoulos, Christos C. Spandonidis, Nikos Themelis, Christos Giordamlis, Spilios Fassois
Summary: This study developed two deep-learning models for predicting vessel propulsion power, which are feed-forward neural network and recurrent neural network. The research focused on data pre-processing phases and optimal configuration decision process for different models, evaluating factors such as the number of layers in the neural network that played a significant role in the outcome.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Marine
Pavlos Karagiannidis, Nikos Themelis
Summary: This study presents data-driven models for ship propulsion, focusing on the statistical evaluation and preprocessing of data. By utilizing high frequency data sets and advanced algorithms, the accuracy of the models can be greatly improved, enhancing prediction ability regarding the ship's actual condition.
Article
Green & Sustainable Science & Technology
Jordi Mas-Soler, Emre Uzunoglu, Gabriele Bulian, C. Guedes Soares, Antonio Souto-Iglesias
Summary: This paper presents towing tests of a state-of-the-art free-float capable tension leg platform supporting a 10 MW wind turbine, focusing on the platform's transportation stage and hydrodynamic behavior in calm water and waves. The study shows a reduction of average resistance in waves in some cases compared to calm water.
Article
Transportation
A. Colling, R. Hekkenberg, E. van Hassel, M. Vidic, I Backalov
Summary: This study investigates the implementation of waterborne platooning transport concept in the Rhine and Danube regions, finding that the application is more promising in the Rhine due to certain factors hindering implementation in the Danube such as low wages, low traffic density, and common use of large push tows.
EUROPEAN TRANSPORT RESEARCH REVIEW
(2022)
Article
Engineering, Marine
Anastasios Zalachoris, Nikos Themelis
Summary: The efficiency of a Mewis propeller duct is examined through the analysis of ship operational data. The study focuses on calculating key performance indicators to monitor the performance of vessels and using multiple linear regression to predict main engine fuel oil consumption.
JOURNAL OF MARINE SCIENCE AND APPLICATION
(2022)
Article
Engineering, Marine
Milica Vidic, Igor Backalov
Summary: The regulatory approach to stability assessment of seagoing ships has evolved significantly, while the stability regulations for inland vessels have not followed a similar path. This paper investigates the present stability requirements for large inland passenger ships (LIPS), criticizes the current regulations, emphasizes the need for global harmonization, and examines the hierarchy of stability requirements for LIPS. The study reveals that damage stability dominates the stability requirements of LIPS and that the choice of Flag can significantly affect the stability assessment, even for ships intended for the same waterway. Significant discrepancies in stability assessments performed according to different regulations raise questions about the reliability of the present regulatory framework for LIPS stability.
Article
Engineering, Marine
George Nikolaidis, Nikos Themelis
Summary: This paper presents the quantification of the impact of ship design measures on energy efficiency using data-driven models. Data collected before and after ship retrofit is analyzed and artificial neural networks are used for prediction and evaluation to assess the fuel consumption savings achieved by the design measures.
SHIP TECHNOLOGY RESEARCH
(2022)
Article
Engineering, Marine
Ageliki Kytariolou, Nikos Themelis
Summary: A weather routing tool is presented to determine the optimal path for minimizing fuel consumption and ensuring safe passage based on forecasted weather data and safety considerations. Developed in MATLAB, the tool takes into account detailed ship characteristics and estimates ship's motions and fuel oil consumption. A genetic algorithm is used to find the optimal route by considering ship's heading or both heading and power settings as variables.
JOURNAL OF NAVIGATION
(2022)
Article
Engineering, Marine
Nikos Themelis, Manolis Angelou, Kostas J. Spyrou
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2020)
Proceedings Paper
Green & Sustainable Science & Technology
N. Themelis, Ch C. Spandonidis, Ch Giordamlis
SUSTAINABLE DEVELOPMENT AND INNOVATIONS IN MARINE TECHNOLOGIES
(2020)
Article
Engineering, Marine
Alba Ricondo, Laura Cagigal, Beatriz Perez-Diaz, Fernando J. Mendez
Summary: This research presents a site-specific metamodel based on the SWASH numerical model simulations, which can predict coastal hydrodynamic variables in a fast and efficient manner. The metamodel uses downscaled and dimensionality reduced synthetic database to accurately reproduce wave setup, wave heights associated with different frequency bands, and wave runup. This method has great potential in coastal risk assessments, early warning systems, and climate change projections.
Article
Engineering, Marine
Xiao Yu, Wangjun Ren, Bukui Zhou, Li Chen, Xiangyun Xu, Genmao Ren
Summary: This study investigated and compared the compression responses and energy absorption capacities of coral sand and silica sand at a strain rate of approximately 1000 s-1. The results showed that coral sand had significantly higher energy absorption capacity than silica sand due to its higher compressibility. The study findings suggest that using poorly graded coral sand can improve its energy absorption capacity.
Article
Engineering, Marine
Jingxi Zhang, Junmin Mou, Linying Chen, Pengfei Chen, Mengxia Li
Summary: This paper proposes a cooperative control scheme for ship formation tracking based on Model Predictive Control. A predictive observer is designed to estimate the current motion states of the leader ship using delayed motion information. Comparative simulations demonstrate the effectiveness and robustness of the proposed controller.
Article
Engineering, Marine
Yu Yao, Danni Zhong, Qijia Shi, Ji Wu, Jiangxia Li
Summary: This study proposes a 2DH numerical model based on Boussinesq equations to investigate the impact of dredging reef-flat sand on wave characteristics and wave-driven current. The model is verified through wave flume experiments and wave basin experiments, and the influences of incident wave conditions and pit morphological features on wave characteristics are examined.
Article
Engineering, Marine
Jayanta Shounda, Krishnendu Barman, Koustuv Debnath
Summary: This study investigates the double-average turbulence characteristics of combined wave-current flow over a rough bed with different spacing arrangements. The results show that a spacing ratio of p/r=4 offers the highest resistance to the flow, and the double-average Reynolds stress decreases throughout the flow depth. The advection of momentum-flux of normal stress shows an increase at the outer layer and a decrease near the bed region after wave imposition. Maximum turbulence kinetic energy production and diffusion occur at different layers. The turbulence structure is strongly anisotropic at the bottom region and near the outer layer, with a decrease in anisotropy observed with an increase in roughness spacing.
Article
Engineering, Marine
Meng Zhang, Lianghui Sun, Yaoguo Xie
Summary: The research proposes a method for online identification of wave bending and torsional moment in hull structures. For structures without large openings, the method optimizes sensor positions and establishes a mathematical model to improve accuracy. For structures with large openings, a joint dual-section monitoring method is proposed to simultaneously identify bending and torsional moments in multiple key cross sections.
Article
Engineering, Marine
Longming Chen, Shutao Li, Yeqing Chen, Dong Guo, Wanli Wei, Qiushi Yan
Summary: This study investigated the dynamic response characteristics and damage modes of pile wharves subjected to underwater explosions. The results showed that the main damaged components of the pile wharf were the piles, and inclined piles had a higher probability of moderate or more significant damage compared to vertical piles. The study also suggested that replacing inclined piles with alternative optimized structures benefits the blast resistance of pile wharves.
Article
Engineering, Marine
I. -C Kim, G. Ducrozet, V. Leroy, F. Bonnefoy, Y. Perignon, S. Bourguignon
Summary: Previous research focused on the accuracy and efficiency of short-term wave fields in specific prediction zones, while we developed algorithms for continuous wave prediction based on the practical prediction zone and discussed important time factors and strategies to reduce computational costs.
Article
Engineering, Marine
Hang Xie, Xianglin Dai, Fang Liu, Xinyu Liu
Summary: This study investigates the load characteristics of a three-dimensional stern model with pitch angle through a drop test, and reveals complex characteristics of pressure distribution near the stern shaft. The study also shows that the vibration characteristics of the load are influenced by the drop height and pitch angle, with the drop height having a greater effect on the high-frequency components.
Article
Engineering, Marine
Hangyuan Zhang, Wanli Yang, Dewen Liu, Xiaokun Geng, Wangyu Dai, Yuzhi Zhang
Summary: The deep-water bridge is more vulnerable to earthquake damage than the bridge standing in air. The larger blocking ratio has a significant impact on the added mass coefficient, which requires further comprehensive study. The generation mechanism of block effect is analyzed using numerical simulation software ANSYS Fluent. The results show that the recirculation zone with focus reduces the pressure on the back surface of the cylinder, resulting in the peak value of in-line force not occurring synchronously with the peak value of acceleration. The change in position and intensity of the recirculation zone with focus, as well as the change in water flow around the cylinder surface, are identified as the generation mechanism of the block effect, which has a 10% influence on the hydrodynamic force. The changing rule of the added mass coefficient with blocking ratio is discussed in detail, and a modification approach to the current added mass coefficient calculation method is suggested. Physical experiments are conducted to validate the modification approach, and the results show that it is accurate and can be used in further study and real practice.
Article
Engineering, Marine
Golnesa Karimi-Zindashti, Ozgur Kurc
Summary: This study examines the performance of an in-house code utilizing a deterministic vortex method on the rotation of circular and square cylinders. The results show that rotational motion reduces drag forces, suppresses fluctuating forces, and increases lift forces. The code accurately predicts vortex shedding suppression and identifies the emergence of near-field wakes in the flow over rotating square cylinders.
Article
Engineering, Marine
George Dafermos, George Zaraphonitis
Summary: The survivability of damaged ships is of great importance and the regulatory framework is constantly updated. The introduction of the probabilistic damage stability framework has rationalized the assessment procedure. Flooding simulation tools can be used to investigate the dynamic response of damaged ships.
Article
Engineering, Marine
Xuyue Chen, Xu Du, Chengkai Weng, Jin Yang, Deli Gao, Dongyu Su, Gan Wang
Summary: This paper proposes a real-time drilling parameters optimization method for offshore large-scale cluster extended reach drilling based on intelligent optimization algorithm and machine learning. By establishing a ROP model with long short-term memory neurons, and combining genetic algorithm, differential evolution algorithm, and particle swarm algorithm, the method achieves real-time optimization of drilling parameters and significantly improves the ROP.
Article
Engineering, Marine
Sung-Jae Kim, Chungkuk Jin, MooHyun Kim
Summary: This study investigates the dynamic behavior of a moored submerged floating tunnel (SFT) under tsunami-like waves through numerical simulations and sensitivity tests. The results show that design parameters significantly affect the dynamics of the SFT system and mooring tensions, with shorter-duration and higher-elevation tsunamis having a greater impact.
Article
Engineering, Marine
G. Clarindo, C. Guedes Soares
Summary: Environmental contours are constructed using the Inverse-First Order Reliability Method based on return periods. The paper proposes the use of the Burr distribution to model the marginal distribution of long-term significant wave heights. The newly implemented scheme results in different environmental contours compared to the reference approach.
