Article
Engineering, Marine
Mingshuo Cao, Yujia Liu, Tiantian Gai, Mi Zhou, Hamido Fujita, Jian Wu
Summary: This article proposes a comprehensive star rating approach for cruise ships by combining subjective and objective evaluation. It establishes an index system, adopts modified TOPSIS to handle objective data, defines a distributed linguistic star rating function, and presents a novel weight calculation method. The article also introduces the personalized individual semantics model to deal with uncertainty in the star rating process. Finally, it collects data of nine cruise ships to obtain their star rating results and provides suggestions for improvement.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Review
Engineering, Marine
Zheng Zeng, Chenxin Lyu, Yuanbo Bi, Yufei Jin, Di Lu, Lian Lian
Summary: This paper provides a detailed literature review of hybrid aerial vehicles (HAUV) and their cross-domain mobility. It discusses the importance of the control system in ensuring smooth air-water transitions for HAUV and reviews recent developments in this area. The paper also highlights the challenges that need to be addressed in developing HAUV with persistent autonomy.
Article
Engineering, Marine
Emad Sobhani, Amir R. Masoodi
Summary: This paper investigates the dynamic performance of Connected Elliptical-Cylindrical Shells (CECSs) using nanocomposite materials. The equivalent mechanical characteristics of the CECSs are obtained, and the natural frequencies of CECSs with different boundary conditions are numerically evaluated. The effects of various parameters on the frequency parameter of CECSs are also studied.
Article
Engineering, Civil
Miao Yang, Haiwen Wang, Ke Hu, Ge Yin, Zhiqiang Wei
Summary: This article reports a convolutional neural network (CNN)-based inception-attention network (IA-Net) model for classifying underwater images from natural images. By simulating the visual correlation mechanism of images taken from special environments, the importance of context background in addition to salient objects is demonstrated. The IA-Net achieves high accuracy in underwater image classification and outperforms other networks in distinguishing underwater images from similar nonunderwater images.
IEEE JOURNAL OF OCEANIC ENGINEERING
(2022)
Article
Engineering, Marine
Jiqiang Li, Guoqing Zhang, Bo Li
Summary: A logic virtual ship-logic virtual aircraft (LVS-LVA) guidance principle is developed to generate reference heading signals for the cooperative path-following control of an underactuated surface vessel (USV) and an unmanned aerial vehicle (UAV). A robust adaptive neural cooperative control algorithm is designed using dynamic surface control, radial basic function neural networks, and event-triggered technique. The proposed algorithm achieves concise form, low transmission burden, and robustness for the control of the USV-UAV system.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Marine
Xinwang Liu, Weiwen Zhao, Decheng Wan
Summary: This paper introduces the application of the multi-fidelity Co-Kriging surrogate model in hull form optimization design, which combines the advantages of high-fidelity and low-fidelity sample evaluation to improve accuracy and efficiency. Numerical examples are used to validate the advantages of the multi-fidelity Co-Kriging surrogate model in terms of fidelity and efficiency.
Article
Engineering, Marine
Somaiyeh MahmoudZadeh, Amin Abbasi, Amirmehdi Yazdani, Hai Wang, Yuanchang Liu
Summary: This paper presents an uninterrupted collision-free path planning system for multiple USVs in ocean sampling missions. The proposed system integrates a B-Spline data frame and a PSO-based solver engine to provide smart sampling and optimal, smooth path curves.
Article
Engineering, Civil
Karen Panetta, Landry Kezebou, Victor Oludare, Sos Agaian
Summary: The study introduces a comprehensive underwater object tracking benchmark dataset, highlighting the shortcomings of existing tracking algorithms on underwater data and demonstrating improved tracking performance through a generative adversarial network enhancement model.
IEEE JOURNAL OF OCEANIC ENGINEERING
(2022)
Article
Engineering, Marine
Lichen Li, Xin Liu, Hao Liu, Wenbing Wu, Barry M. Lehane, Guosheng Jiang, Meijuan Xu
Summary: The concept of hybrid pile foundation has been proposed and studied to overcome the limitations of conventional monopiles in supporting offshore wind turbines. This paper conducts static lateral load tests on model piles and hybrid pile foundations in saturated sand, and analyzes the influence of pile stiffness and hybrid foundation type on lateral response. Experimental results show that the lateral capacity of the hybrid pile foundation is significantly improved compared to the monopile foundation. The numerical analysis reveals the load transfer mechanism and the efficiency of soil resistance mobilization of different pile foundations.
Article
Engineering, Marine
Emad Sobhani, Amir R. Masoodi, Amir Reza Ahmadi-Pari
Summary: This study enhances the opening angle of Linked Hemispherical-Conical Shell (LHCS) structures using graphene-based nanocomposite materials and calculates the Natural Frequency Values (NFVs) associated with the structure. The Halpin-Tsai approach and the rule of mixture are used to determine the mechanical criteria of the graphene-based nanocomposite materials, while Donnell's assumptions and First-Order Shear Deformation Theory (FOSDT) are employed to obtain the main formulations of the LHCS. Hamilton's technique is used to find the kinetic equations of the LHCS, and the Generalized Differential Quadrature (GDQ) program is applied to discretize the equations. The obtained NFVs are compared with benchmark studies to validate the accuracy of the proposed scheme. Additionally, the effects of various geometric criteria and scattering models on the NFVs are investigated.
Article
Engineering, Ocean
Weijia Ma, You Qin, Kai Zhao, Guoxing Chen
Summary: The study highlights significant differences in liquefaction characteristics between saturated coral sand and quartz sand under different cyclic stress paths. A unique relationship between deviatoric strain amplitude and excess pore water pressure ratio can be established regardless of cyclic stress paths. Furthermore, the dissipative energy required to liquefaction triggering of coral sand is much larger than that of quartz sand.
MARINE GEORESOURCES & GEOTECHNOLOGY
(2022)
Review
Engineering, Marine
Chenguang Liu, Xiumin Chu, Wenxiang Wu, Songlong Li, Zhibo He, Mao Zheng, Haiming Zhou, Zhixiong Li
Summary: This article discusses the development and trends of Maritime Autonomous Surface Ships (MASS) and focuses on the issues and research progress of human-machine cooperative navigation. Key theories, technologies, and feasible approaches are provided. Human-machine cooperative navigation is seen as an important breakthrough for MASS development, and inland and offshore waters are considered suitable areas for testing its performance.
Article
Engineering, Marine
Zi-Fei Meng, A-Man Zhang, Ping-Ping Wang, Fu-Ren Ming, Boo Cheong Khoo
Summary: This paper proposes a targeted essentially non-oscillatory (TENO) SPH scheme, which can be applied to reproduce compressible flows with shocks and small-scale structures, incompressible vortex flows, and free surface flows. The TENO reconstruction is implemented by modifying polynomial interpolations in SPH.
Article
Engineering, Marine
B. Afra, S. Karimnejad, A. Amiri Delouei, A. Tarokh
Summary: In this study, the combination of Lattice Spring Method (LSM) and Immersed Boundary-Lattice Boltzmann Method (IB-LBM) is employed to investigate fluid-elastic body interaction problems under unsteady conditions. The method eliminates the need for arbitrary spring parameters to determine the deformation of the flexible body. Numerical simulations are conducted to examine the effects of various variables on the lift and drag coefficients of tandem cylinders. The results show that the fluctuations of the lift coefficient are reduced when the filament's capillary number is at its maximum value and the filament's clamped edge is located in the middle of the cylinders. Additionally, increasing the filament's length results in a significant reduction in the drag coefficient on the downstream cylinder.
Article
Engineering, Civil
Emma McAllister, Andres Payo, Alessandro Novellino, Tony Dolphin, Encarni Medina-Lopez
Summary: Analysis of shoreline change is crucial for coastal scientists, coastal engineers, and coastal managers. Multispectral Satellite Imagery (MSI) provides high resolution datasets for monitoring coastlines globally. Despite access to global and free satellite imagery, a method to monitor different shoreline types and indicators globally has not been developed yet.
COASTAL ENGINEERING
(2022)
Article
Engineering, Marine
Chao Mi, Shifeng Huang, Yujie Zhang, Zhiwei Zhang, Octavian Postolache
Summary: This paper presents a visual non-contact measurement method for real-time positioning of the three-dimensional attitude of containers in automatic container terminal operations. The method achieves accurate measurement using a combination of deep learning networks and traditional image processing algorithms, meeting the requirements of automated loading and unloading.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Marine
S. Behera, N. H. Aljahdaly, J. P. S. Virdi
Summary: This work investigates three nonlinear equations that describe waves on the oceans using the modified (G'/G(2))-expansion approach. New exact solutions are obtained and plotted.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Marine
Ghasem Rashidian, Khalid Shahin, Gehad E. Elshopakey, Heba H. Mahboub, Azin Fahim, Hiam Elabd, Marko D. Prokic, Caterina Faggio
Summary: This study found that feeding carp with nutmeg extract can significantly enhance their growth parameters, immune system, and resistance against fish pathogenic bacteria.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Marine
Chang Xie, Li Zhou, Shifeng Ding, Renwei Liu, Sijie Zheng
Summary: In this study, the CFD-DEM coupling method is used to investigate the self-propulsion performance of an ice-strengthened bulk carrier in a brash ice channel. The hydrodynamic performance of the propeller is simulated using CFD, while the ice load is calculated using DEM. The simulation results show good agreement with both ship-ice and propeller-ice interaction processes. The self-propulsion simulations under different conditions are analyzed, and the calculated parameters are compared with model test data. The results indicate that the simulated power is within 8.5% of the measurements. This study provides a valuable tool for hull development and navigation guidance of polar ships in brash ice channels.
Article
Engineering, Civil
Jun-liang Gao, Jing Lyu, Jing-hua Wang, Jian Zhang, Qian Liu, Jun Zang, Tao Zou
Summary: In this study, the transient fluid resonance phenomenon inside a narrow gap between two adjacent boxes is simulated using the open-sourced computational fluid dynamics software, OpenFOAM. It is found that the motion of the weather-side box significantly affects the characteristics of the transient gap resonance, and the relevant physical quantities closely depend on both the spectral peak period and the focused wave amplitude.
CHINA OCEAN ENGINEERING
(2022)
