Article
Engineering, Marine
Imad Jaradat, Marwan Alquran
Summary: This paper investigates the physical shape-changed propagations in the generalized Equal-Width equation through studying the explicit solutions of the Wazwaz-Benjamin-Bona-Mahony model. Both models are important in various research disciplines, including ocean engineering and science, and depict the propagation of equally-width waves. The study highlights the impact of nonlinearity and dispersion coefficients on altering the physical shape of the models using a new exponential-expansion scheme. 2D and 3D graphical plots are provided to validate the findings.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Marine
Muhammad Shohaib, W. Masood, R. Jahangir, M. Siddiq, Sadah A. Alkhateeb, S. A. El-Tantawy
Summary: This study analyzes dust-acoustic waves (DAWs) in a collisionless unmagnetized dusty plasma using the fluid theory of plasmas. The modified Kadomtsev-Petviashvili (mKP) equation is derived and used to investigate the propagation and interaction of solitary waves. The effects of ion distribution parameters on the frequency of DAWs are studied and compared with Maxwellian and kappa distributions. The calculated electric field amplitudes of dust-acoustic solitary waves (DASWs) for different ion distributions agree well with observations. The interaction time of DASWs for non-Maxwellian ion distributions is estimated and shown to be fastest for the (r, q) distributed ions. The interaction between compressive and rarefactive solitons is also discussed in detail.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2022)
Review
Engineering, Marine
Zunaira Asif, Zhi Chen, Chunjiang An, Jinxin Dong
Summary: This paper critically reviews the vulnerability of shorelines to oil spill impact, examines the implications of seasonal variations on oil natural attenuation, and discusses various monitoring techniques and preventive methods to mitigate the effects of oil spills on shorelines.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Marine
M. S. Osman, Hassan Almusawa, Kalim U. Tariq, Sadia Anwar, Sachin Kumar, Muhammad Younis, Wen-Xiu Ma
Summary: In this research article, the perturbed nonlinear Schrodinger equation (P-NLSE) is examined using two analytical methods, and several new families of complex soliton wave solutions are established. The results demonstrate the capability of these methods to identify exact solutions of other complex nonlinear evolution equations.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Marine
Arzu Akbulut, Melike Kaplan, Mohammed K. A. Kaabar
Summary: This study focuses on the Kaup-Kupershmidt (KK) equation to establish formal Lagrangian, conservation laws, and exact solutions. The conservation laws derived from the conservation theorem are found to be trivial. Furthermore, exact solutions are obtained using the modified simple equation (MSE) method. 3D surfaces are plotted to illustrate important wave characteristics of the novel exact solutions.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Ocean
Evan Krell, Scott A. King, Luis Rodolfo Garcia Carrillo
Summary: Path planning for Autonomous Surface Vehicles in complex shorelines and spatio-temporal environmental forces is a challenging task. Deterministic algorithms provide optimal solutions but are computationally expensive. Metaheuristic algorithms sacrifice optimality for reduced computation but can converge to local optima. This paper proposes using Visibility Graphs (VGs) to initialize the population of a Particle Swarm Optimization (PSO) algorithm, significantly improving its reliability and competitiveness with deterministic algorithms. The concept of opportunistic reward-based planning is also introduced, with VGs used to enhance both reward and efficiency in PSO. The combination of VGs and PSO efficiently plans routes for complex marine path planning problems.
APPLIED OCEAN RESEARCH
(2022)
Article
Engineering, Marine
Wedad Albalawi, S. A. El-Tantawy, SadahA. Alkhateeb
Summary: This work investigates the head-on collisions of non-stationary dissipative solitons in ultracold neutral plasmas (UNPs). The extended Poincare-Lighthill-Kuo (PLK) approach is used to reduce the fluid equations to two damped Korteweg-de Vries (dKdV) equations. The goal of the paper is to find a new general approximate analytical solution to the dKdV equation and study the mechanism of soliton propagation and interaction.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Marine
Sachin Kumar, Ihsanullah Hamid, M. A. Abdou
Summary: Nonlinear evolution equations (NLEEs) are used to determine the fundamental principles of natural phenomena. This article employs the generalized exponential rational function (GERF) technique to find closed-form wave solutions and analyze the dynamics of different wave profiles in the generalized nonlinear wave equation. The obtained solutions include various soliton solutions and provide valuable insights into nonlinear phenomena in liquids.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2023)
Article
Engineering, Marine
Chao Wang, Peng Li, Chunyu Guo, Lianzhou Wang, Shuai Sun
Summary: This study investigates the hydrodynamics and wake of the P1727 CLT propeller using large eddy simulation, revealing minimal fluctuations in thrust and torque. It presents a novel mutual inductance mechanism for the instabilities in CLT propeller wake, showing strengthened merged vortices triggering outer instabilities while inner trailing vortices become the dominant mutual inductance mode of the wake.
Article
Engineering, Marine
Marwan Alquran, Mohammed Ali, Hammad Jadallah
Summary: This paper investigates new wave solutions for the modified-mixed KdV equation and bidirectional waves for the Benjamin Ono equation using extended rational sine-cosine and sinh-cosh methods. Different types of soliton solutions are categorized and analyzed with 2D and 3D graphs. Additionally, some physical properties of the new bidirectional waves solutions to the Benjamin Ono model are discussed.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Marine
Zhongwei Zhao, Pingyi Zhang, Song Zhou, Xiongtao Fan
Summary: This study quantifies the influence of corrosion on the collapse pressure of a spherical shell through stochastic numerical analysis and experimental verification. A formula for predicting the reduction factor of collapse pressure is proposed. The results provide valuable insights for assessing the negative pressure capacity of aged hollow spheres.
Article
Engineering, Marine
Yang Guo, Bo Zhu, Bo Yang, Yinghui Li
Summary: The static and dynamic characteristics of composite pipes conveying super-critical fluid in thermal environment were studied, showing that pipes with larger fiber orientation angles are more prone to instability, and temperature and internal fluid velocity have significant influence on the post-buckling natural frequencies and mode-shapes.
Article
Engineering, Marine
Rana Muhammad Adnan Ikram, Reham R. R. Mostafa, Zhihuan Chen, Kulwinder Singh Parmar, Ozgur Kisi, Mohammad Zounemat-Kermani
Summary: In this study, deep learning models (CNN and LSTM) combined with two optimization algorithms (RSA and INFO) were used to accurately estimate the daily water temperature of the Bailong River in China. The experimental results showed that the LSTM-INFO model with DOY input had higher accuracy in predicting daily water temperature.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Marine
Yuxing Li, Bingzhao Tang, Shangbin Jiao
Summary: This paper uses the snake optimizer (SO) to optimize SloEn and proposes a new entropy indicator, named SO SloEn (SO-SloEn). Then, a novel adaptive S-RNS feature extraction method is put forward in combination with the successive variational mode decomposition (SVMD) and SO-SloEn, which solves the parameter selection problem of variational mode decomposition (VMD). The effectiveness of the proposed method is verified by two S-RNS cases, and the results indicate that the recognition rate of the proposed method is always the highest compared with other decomposition algorithms and other entropy indicators under the condition of extracting different numbers of IMFs; moreover, the highest recognition rate can reach more than 92% in both cases.
Article
Engineering, Marine
Carolina P. Rocha, Henrique N. Cabral, Joao C. Marques, Ana M. M. Goncalves
Summary: World aquaculture food production is increasing every year, with Asia leading the global production. Europe is also experiencing rapid expansion in aquaculture, with Norway being the leading European producer. Portugal, despite being a traditional fishing country, has invested in the development of aquaculture and has become a significant producer. Most aquaculture facilities in Portugal operate in coastal systems, using extensive and semi-intensive rearing techniques.
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.
Review
Engineering, Marine
Yihong Li, Zhiqiang Hu
Summary: This review discusses the importance of multi-attribute decision-making models in the decommissioning of offshore oil and gas facilities, emphasizing the critical role of decision-making in the entire decommissioning process, and pointing out the current issues with existing models.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Marine
Monika Niwas, Sachin Kumar, Harsha Kharbanda
Summary: This paper investigates the Lie symmetry analysis of a generalized (3+1)-dimensional breaking soliton equation and derives various solutions including special functional parameter solutions and wave solutions. Some of the new solutions are important for studying the nonlinear wave propagation and wave-wave interactions in high-dimensional nonlinear evolution equations.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Marine
Yuzhou Wang, Ali Matin Nazar, Jiajun Wang, Kequan Xia, Delin Wang, Xiaosheng Ji, Pengcheng Jiao
Summary: The RS-TENG design utilizes spherical dielectrics, copper, and aluminum as electrodes, and combines multiple electrodes and dielectric layers in the spherical structure to collect energy from ocean wave action. Experimental results demonstrate the significant impact of spherical dielectrics on energy harvesting performance.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Marine
Muhammad Ahmad, Aamer Shahzad, Farooq Akram, Fareed Ahmad, Syed Irtiza Ali Shah
Summary: This research focuses on designing a straight-bladed double-Darrieus hybrid vertical axis wind turbine with high power coefficient and self-starting capability. Computational fluid dynamics analysis and design experiments were conducted to determine the optimal configuration. The proposed hybrid wind turbine has a higher self-starting speed and the ability to convert wind energy even at low wind speeds.
