-
Effect of the cross-flow wake on the hydrodynamic performance of the HSP propeller by the CFD solver J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2021-03-01 Jabbar Firouzi; Hassan Ghassemi; Karim Akbari Vakilabadi
This paper numerically presented the effect of the cross-flow wake on the hydrodynamic performance of the ship propeller. The propeller is a typical high skewed propeller (HSP) of the training ship ‘Seiun-Maru’, whose experimental data have been frequently used by many researchers. The viscous flow is solved by an incompressible Reynolds Averaged Navier–Stokes (RANS) method using Ansys-CFX solver.
-
Numerical investigation of hydrodynamic and hydro-acoustic performance of underwater propeller operating in off-design flow conditions J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-12-30 Muhammad Rehan Naseer; Emad Uddin; Aamir Mubashar; Muhmmad Sajid; Zaib Ali; Khalid Akhtar
ABSTRACT This paper is aimed to numerically investigate the hydrodynamic and hydro-acoustic behaviours of rotating underwater propeller operating in off-design flow conditions. The performance of the propeller is subjected to significant alteration, as it experiences flow, coming at an angle. For this purpose, numerical simulation is performed for the INSEAN Propeller E779A. Turbulence model based
-
LNG a clean fuel – the underlying potential to improve thermal efficiency J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-10-15 Nawin Ranjan Sharma; Dalaklis Dimitrios; Aykut I. Olcer; Nikitas Nikitakos
The presence of sulphur in marine fuel oil relates to health and environmental concerns, as the respective combustion generates sulphur dioxide (SO2). The only method to control this SO2 generation is to limit the quantity of sulphur in the fuel. Shipping activities, although not the main source, contribute around 13% of the total anthropogenic SO2 IMO-3GHG [2015. Third IMO Greenhouse Gas Study, 3rd
-
An integrated FMEA and MCDA based risk management approach to support life extension of subsea facilities in high-pressure–high-temperature (HPHT) conditions J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-10-13 Mahmood Shafiee; Isaac Animah
The majority of facilities installed in offshore oil and gas fields during the 1980s and 1990s were designed to operate in ‘normal’ conditions. However, during the operational life of the fields, some new high pressure/high temperature (HPHT) wells may be discovered and tied back to older facilities. Operating these facilities beyond their design parameters in harsh environments may lead to catastrophic
-
Numerical study on the ultimate load of offshore two-planar tubular KK-joints at fire-induced elevated temperatures J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-10-07 Neda Azari-Dodaran; Hamid Ahmadi
A total of 270 nonlinear steady-state finite element (FE) analyses were performed on 54 FE models of two-planar CHS KK-joints subjected to axial loading at five different temperatures (20°C, 200°C, 400°C, 550°C, and 700°C). The main objective was to study the influence of temperature and dimensionless geometrical parameters on the ultimate load, failure modes, and initial stiffness of the KK-joints
-
Ship acceleration motion under the action of a propulsion system: a combined empirical method for simulation and optimisation J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-10-07 Sasan Tavakoli; Saeed Najafi; Ebrahim Amini; Abbas Dashtimansh
ABSTRACT The current paper presents a simple mathematical model for replication of the transient acceleration motion of displacement hulls in calm water under the action of a propulsion system. Different empirical methods are coupled, and an operational speed problem is solved in the time domain. The resistance of the ship is calculated by using the Holtrop method. The values of thrust force, torque
-
Membrane desalination of ballast water using thermoelectric energy from waste heat J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-10-06 Veera Gnaneswar Gude
Ballast water management and treatment is an on-going issue for marine industry including small and bulk carriers, cruise ships, passenger ships and cargo vessels. Several regulations are implemented at regional, national and international levels to minimise the environmental impacts related to improper disposal of contaminated ballast water at ports. In this study, an environmentally benign approach
-
Overview of performing shore-to-ship and ship-to-ship compatibility studies for LNG bunker vessels J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-10-01 Jun Hui Tam
Stringent regulations and policies have prompted vessel operators and owners to direct the interests on developing greener vessels from oil-fuelled vessels to LNG-fuelled vessels. Consequently, the increasing demands for LNG, as the alternative fuel for vessels, have led to the booming development of LNG carriers or bunker vessels. LNG transfer operations, including loading and bunkering operations
-
Failure loads analysis of corroded pipe repaired by composite material under tension and internal pressure J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-09-29 Yu Zhang; Ziyun Cheng; Zhike Jia
ABSTRACT Pipeline repair plays an important role in safe pipeline operation. Composite material repair technology has been widely used in pipeline repair due to its advantage of light weight and low cost. In this paper, the failure loads of repaired pipe with composite under tension and internal pressure are analysed by experiments, Finite Element Method (FEM) and theoretical method, and simple formula
-
A vision system for pose estimation of an underwater robot J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-07-04 Krzysztof Holak; Patryk Cieslak; Piotr Kohut; Mariusz Giergiel
This paper presents a vision system designed for an underwater robot to facilitate measuring the distance to an inspected surface and its orientation with respect to the robot. The system uses a set of laser modules to project a rectangular dot pattern on the inspected surface. The vision system is used to measure the dots’ locations in the 3D space and calculate the distance to the surface, together
-
BEM applied to the cup effect on the partially submerged propeller performance prediction and ventilation pattern J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-03-15 Ehsan Yari; Ali Barati Moghadam
This article describes the development of the boundary element method (BEM) to predict the partially submerged propeller (PSP) performance with and without the cup effect, and the 3D unsteady ventilation pattern under an open flow condition. The applied theory is a time-domain BEM, where the perturbation potential is a function of immersion ratio and time. For validation, the unsteady ventilating flow
-
The use of acoustic emission elastic waves as diagnosis method for insulated-gate bipolar transistor J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-02-20 Artur Bejger; Maciej Kozak; Radosław Gordon
The article describes research into the use of acoustic emission elastic waves (AE) for diagnosing insulated-gated bipolar transistors (IGBTs). Currently used in many modern shipboard power electronic systems, IGBTs are crucial components required to operate with extreme reliability. The acoustic emission elastic waves method was used to determine the acoustic signals of switching transistor and can
-
Oxygen depletion in enclosed spaces J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-01-24 Daniel Burke; Manhal Alnasser
The aim of this research project was to determine the rate at which oxygen depletes in enclosed spaces. Cargo holds, chain locker and double bottom tanks are only some of the enclosed spaces found on a ship. The project was conducted using oxygen depletion experiments on scrap metal in sealed and open vented containers. In addition, the speed of oxygen depletion in a replicated chain locker is investigated
-
A new lifting pump for deep-sea mining J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2020-01-07 Hengling Yang; Shaojun Liu
A lifting motor pump for deep-sea mining was proposed as a researching object. First, the structure and design method of this pump was introduced. Second, the simulating computations of the impeller in this pump were conducted at different working processes. Finally, the experiment of a two-stage lifting motor pump was conducted in the process of work to prove the applicability of this new lifting
-
A two-stage stochastic model for workforce capacity requirement in shipbuilding J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-12-19 Mustafa Kafali; Nezir Aydin; Yusuf Genç; Uğur Buğra Çelebi
Studies have been being carried out to make production faster and more organised in the shipbuilding industry, as in other industry. The fact that automation-based works are limited in the shipbuilding industry is one of the biggest challenges encountered in block production as in other stages of shipbuilding. The blocks are time-consuming and difficult components to produce in the shipbuilding process
-
System-based calibration of offshore Malaysia environmental action factors for the ISO 19902 PETRONAS offshore fixed platforms J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-12-10 Riaz Khan; Lee Luong Ann; Nigel Wayne Nichols; Justin Bucknell; Kaisheng Chen; Jieyan Chen
Previously, the action factors, which are generally used in the region of Malaysia is based on the data from the Gulf of Mexico (GoM) or the North Sea, where the environmental condition is much harsher than the offshore Malaysia. Direct application of the high load factors in these regions can result in a waste of economic resources. Based on a reliability-based Load and Resistance Factor Design approach
-
A numerical study on flow field and maneuvering derivatives of KVLCC2 model at drift condition J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-10-21 Xiao Yang; Yong Yin; Jingjing Lian
ABSTRACT This paper investigates the flow field around the KRISO Very Large Crude Carrier (KVLCC2) model at different drift angle using the RANS method in combination with the Re-Normalization Group (RNG) k − ε and Shear Stress Transport (SST) k − ω turbulence models. The hydrodynamic forces and yaw moment acting on the KVLCC2 model are calculated under the different turbulence models and drift angles
-
A risk-based approach for determining the future potential of commercial shipping in the Arctic J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-10-04 Mads Christensen; Marina Georgati; Jamal Jokar Arsanjani
As global warming is causing a significant reduction in the extent and the thickness of Arctic sea ice, a narrative for future large-scale commercial shipping in the Arctic has started to evolve. However, while most efforts have aimed to assess the financial benefits along with potential savings in greenhouse gas emissions, few studies have explored risk patterns and safety issues associated with Arctic
-
A fuzzy-based occupational health and safety risk assessment framework and a case study in an international port authority J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-09-27 Muhammet Gul
Ports are complex systems that play a crucial role in the transportation of maritime-related products and services. Since ports face various safety issues in design, installation, operation and maintenance processes, there are many aspects open for improvement in Occupational Health and Safety risk assessment and it is required to deal with risks, reduce them to an acceptable level and control. To
-
Experimental dynamic analysis of the piston assembly of a running single-cylinder diesel engine J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-09-13 Mehmet Cakir
In the study, the dynamic analysis of the engine piston assembly was compared with the experimental measurements and the stable working speed was tried to be determined. The theoretical model was developed in addition to the experimental results. The relationships between the forces and torques applied in the crank mechanism, such as gas force and inertial force, are properly addressed. In the stationary
-
Slurry erosive wear and microhardness characteristics with coarse silica sand of dual reinforced particles ADC12 alloy composites J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-09-13 Surendra Kumar Patel; Basil Kuriachen; Raman Nateriya
The current research was a comparative study of reinforced ceramic particles and mixing proportion on the microstructural and slurry erosive characteristics for fabricated composites. Dual reinforced particle composites were fabricated by adding combinations of numerous wt% of titanium carbide (TiC) and zircon sand (ZrSiO4) to aluminium die-casting (ADC12) alloy matrix composites. ADC12 alloy composite
-
Modelling and performance prediction of a centrifugal cargo pump on a chemical tanker J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-09-12 Onur Yüksel; Burak Köseoğlu
In this paper, a single-stage, horizontal type centrifugal pump, which can be used in a chemical tanker’s cargo operations, was modelled with MATLAB/Simulink software. The modelled pump was run with seven different fluids handled in chemical tankers which are ethyl alcohol, N-Propyl alcohol, phenol, chloroform, castor oil, 55% nitric acid and water. Therefore, the pump’s performance curves and data
-
Reliability maintenance aspects of deck machinery for ageing/aged fishing vessels J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-09-12 David Kimera; Fillemon Nduvu Nangolo
This paper addresses the reliability aspects regarding deck machinery on ageing/aged fishing vessels. A reliability and degradation analysis for ageing fishing vessel deck machinery enables an evaluation of the reliability trend for the remaining useful life of the deck machinery. The research was limited to the maintenance of cranes, winches and capstans and failure data for fishing vessels whose
-
A model for vessel trajectory prediction based on long short-term memory neural network J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-09-10 Huang Tang; Yong Yin; Helong Shen
Each vessel has its own way of sailing in the port region. Any autonomous vessel navigating such a scene should be able to predict the trajectories of surrounding ships and adjust its behaviour to avoid a collision. In this paper, combined with the sequence prediction method, a Long Short-Term Memory (LSTM) model is proposed to predict the trajectories of the vessels. The ground-truth Automatic Identification
-
Power quality analysis for greener shipping by implementing an on-board electric power quality monitoring system J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-08-25 Stefanos Dallas
This paper presents a methodology for the development and installation of an electric power quality monitoring system onboard a ship, for managing and optimising the electric power of critical loads that have a significant effect upon the overall ship efficiency as outlined by the International Maritime Organization rules. The improvement of overall ship efficiency is attained by installing power converters
-
An improved control-limit-based principal component analysis method for condition monitoring of marine turbine generators J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-08-21 Kun Yang; Biao Hu; Reza Malekian; Zhixiong Li
The safe operation of marine turbine generators is a crucial concern in industries and academics. It is always important to monitor the health status of marine turbine generators. The lubricant oil usually carries abundant information on the turbine operation conditions. Various oil parameters of the turbines have been used in the existing monitoring systems. However, many of them conflict with each
-
Exergoeconomic and air emission analyses for marine refrigeration with waste heat recovery system: a case study J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-08-20 Veysi Başhan; Görkem Kökkülünk
Nowadays, shipping industry faces challenges of energy efficiency and reducing of fuel consumption. Moreover, Waste Heat Recovery Systems (WHRS) regarding energy efficiency have a larger focus to utilise the heat energy lost from all thermal processes from ship engines. WHRS is one of the best methods to reduce fuel consumption and implicitly emissions. Refrigeration system, which can be evaluated
-
Study on motion transfer rule and extreme dynamic response of SCR’s top-end heave excitation J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-07-26 Weidong Ruan; Wei Dai; Jianguo Wu
As one of the most critical vessel motion, heave motion will lead to the great tension at the top end of a steel catenary riser (SCR), and can also result in the compression buckling and large bending moment in the touchdown zone (TDZ). The purpose of this study is to investigate the motion transfer rule of top-end heave excitation along catenary risers and explore the underlying correlation between
-
The effects of different cross sections on the hydrodynamic behaviour of sandglass-type FPSOs exposed to regular waves J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-07-14 Adeleh Graylee; Mahdi Yousefifard
This paper presents a numerical investigation on the hydrodynamic performance of sandglass-type FPSOs with four different cross sections. In order to estimate the hydrodynamic performance and utilise the results in the design stage of FPSOs, a frequency-domain numerical simulation program, ANSYS/AQWA software package, has been used. Numerical results were compared with experimental data and good agreement
-
Application of quaternary ammonium compound and aliphatic amine as biocides in the mitigation of microfouling adhered to the internal surface of heat exchangers condensers refrigerated by seawater. Impact on the efficiency of different control strategies applied J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-07-11 José González
ABSTRACT The present article compares the effectiveness of two chemical compounds to reduce the growth of biofilm adhering to the tubes of a heat exchanger-condenser refrigerated by seawater. The compounds tested in the study were: a quaternary ammonium compound (QAC) and an aliphatic amine (triethanol amina, TA). Each biocide was applied intermittently in a first shock stage and in a second stabilising
-
Locomotion control of a biomimetic robotic fish based on closed loop sensory feedback CPG model J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-07-09 Deniz Korkmaz; Gonca Ozmen Koca; Guoyuan Li; Cafer Bal; Mustafa Ay; Zuhtu Hakan Akpolat
This paper presents mechatronic design and hierarchical locomotion control of a biomimetic robotic fish for three-dimensional swimming modes. Inspired by biological features of Lamprey, a closed loop sensory feedback Central Pattern Generator (CPG) model is adapted to hierarchical control mechanism in order to provide robust and effective biomimetic control structure. A sensory feedback mechanism plays
-
Range extension for electromagnetic detection of subsea power and telecommunication cables J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-07-01 T. Szyrowski; A. Khan; R. Pemberton; S. K. Sharma; Y. Singh; R. Polvara
Subsea cables protection afforded by burying a cable [beneath the sea bed] also means that the available methods for their survey are drastically reduced. From the existing methods only electromagnetics (EM) detection can penetrate the sea bed and provide an effective means for cable localisation. However, EM waves attenuate faster in conductive media such as sea water. EM localisation is considered
-
Vibration performance improvement of D/G-set employing inerter-rubber vibration isolator J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-07-01 Huabing Wen; Yang Li; Kun Zhang; Yue Liu; Chengwei Chang
This paper investigated the benefits of vibration performance of diesel generator set (D/G-set) employing a kind of novel anti-vibration structure known as an inerter-rubber vibration isolator. We designed this vibration isolator in parallel with a rubber-part and a ball-screw inerter. Based on the inerter-rubber vibration isolator, the vibration system of an existing D/G-set (5DK-20) was built, and
-
Temperature characteristic and compensation algorithm for a marine high accuracy piezoresistive pressure sensor J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-07-01 S. Wu; T. Zhang; Z. H. Li; J. W. Jia; Y. Deng; P. L. Xu; Y. Shao; D. Y. Deng; B. W. Hu
Pressure sensor used in marine hydrographic survey is an important device for the deep sea detection, the tsunami forecast and the marine engineering. Owing to its mature technology process and low production cost, silicon piezoresistive sensor is widely applied in the field of industrial pressure measurement. However, its temperature effect can result in non-negligible dynamic error, which cannot
-
Status of tidal energy system in India J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-06-27 Vikas Khare
India is the fourth biggest electricity consumer on the planet after the United States, China and Russia. India’s energy strategy concentrates on securing energy sources to address the issue of its developing economy. Service of New and Renewable energy has started an activity to track the advancing Tidal power administrative structure and build up an archive of data in a combined way. The reason for
-
Study on dynamic slope angle of sandy seabed around the submarine piggyback pipeline in steady flow J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-06-27 Enjin Zhao; Lin Mu; Hao Qin; Haoyu Jiang
Submarine piggyback pipeline is an important tool for oil and gas transport, especially, in the marginal oil field. When the scour happens in the seabed, the pipeline slides easily, which may cause the pipeline failure. The dynamic slope angle is one of the most important characteristics of the scour. In this work, the dynamic slope angles of the sandy seabed under piggyback pipelines in steady flow
-
Unsupervised anomaly detection based on clustering methods and sensor data on a marine diesel engine J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-06-25 Erik Vanem; Andreas Brandsæter
Sensor data from marine engine systems can be used to detect changes in performance in near real time which may be indicative of an impending failure. Thus sensor-based condition monitoring can be important for the reliability of ship machinery systems and improve maritime safety. However, there is a need for efficient and robust algorithms to detect such changes in the data streams. In this paper
-
Numerical simulation of the two-degree-of-freedom vortex induced vibration of a circular cylinder at Reynolds number of O(104∼105) J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-06-25 Kunpeng Wang; Qinghai Chi
Vortex induced vibration (VIV) is of practical interest since it can result in the fatigue damage of structures, so has been a highly researched topic during the past few decades. The present study employs the unsteady Reynolds-Averaged-Navier–Stokes (URANS) equations combined with the shear-stress transport (SST) k-ω turbulence model to carry out the numerical simulation of the two-degree-of-freedom
-
Performance analysis of LT code-based HARQ error control in underwater acoustic sensor networks J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-06-25 P. Kaythry; R. Kishore; V. Nancy Priyanka
Underwater acoustic sensor network (UASN) is an emerging technology meant for underwater explorations. In underwater communication, the acoustic signal travels a longer distance with smaller bandwidth. Characteristics of the acoustic channel and the distance between underwater sensor nodes vary with time due to the variations in the water current. This affects the channel quality as well as the topology
-
An energy-efficient nonlinear robust track keeping control algorithm for the Maritime Silk Road J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-06-21 Guangping Yang; XianKu Zhang; Yongxiao Feng
This paper proposes a nonlinear robust track keeping control algorithm for energy efficiency from the perspective of ship motion control, based on the great significance of the twenty-first Century Maritime Silk Road. Replacing the course error e with the sin ( ω e ) driven by the sine function in course keeping loop to serve as the input of the controller, the simulation results tested on the ship
-
An experimental analysis on physical properties and spray characteristics of an ultrasound-assisted emulsion of ultra-low-sulphur diesel and Jatropha-based biodiesel J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-03-21 Anh Tuan Hoang; Viet Dung Tran; Van Huong Dong; Anh Tuan Le
Among the effective solutions for the reduction of environmental pollution, the use of fuels with limited-sulphur content or bio-based fuel has been paid much attention due to their advantages. In this experimental work, the ultra-low-sulphur fuel (ULSD) was mixed with biodiesel extracted from Jatropha oil (JOB) after being processed with ultrasonic assistance. There were eight samples used for mixture
-
A Millman based alternate to symmetric component methods for fault level calculations in marine power systems J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-02-12 Simon Lee Grace
This paper presents an approach to the calculation of unbalanced fault currents in shipboard power systems based on the application of Millman’s theorem. A full analysis of the time-variant fault current produced by a synchronous generator in a typical marine power system is provided; three phase three wire for principal loads and four wire earthed neutral for hotel loads. Hand calculation results
-
Hydrodynamic analysis of a deep-sea pressure equaliser J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-02-02 Haocai Huang; Wenke Ge; Canjun Yang; Yan Wei
Deep-sea hydrothermal source investigation utilising water and gas samples to characterise ocean resources requires water sampler, both large and small volume. How to preserve the original captured samples in the sampler during its lifting process to the surface remains challenging. Our research develops a piston type deep-sea pressure equaliser installed in the sampling bottle to solve the pressure
-
Maintenance strategy selection for critical shipboard machinery systems using a hybrid AHP-PROMETHEE and cost benefit analysis: a case study J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-01-31 Isaac Animah; Mahmood Shafiee
The engine rooms of ships accommodate different machinery systems that are critical to ship operations. For these critical machinery systems to continue delivering the high level of service, operators are required to select and apply the best maintenance interventions. Currently, the selection of appropriate maintenance strategies for different engine room’s machinery systems is handled in a traditional
-
Condition monitoring of marine and offshore machinery using evidential reasoning techniques J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-01-30 Maurice Patrick Asuquo; Jin Wang; Geraint Phylip-Jones; Ramin Riahi
This paper first assesses the operational uncertainties of a particular piece of equipment in a marine and offshore system based on an oil analysis technique. Trend analysis, family analysis, environmental analysis, human reliability analysis and design analysis for each criterion are aggregated using evidential reasoning (ER) and analytical hierarchy process (AHP) algorithms. Data is collected from
-
Spectral fatigue analyses comparison study: Suez Canal vs. Cape of Good Hope Arab Academy for Science, Technologies and Maritime Transport (AASTMT) J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-01-30 Mohamed Essallamy; Alaa Abdel Bari; Mohamed Kotb
ABSTRACT Suez Canal is one of the shortest navigational routes between east and west. Vessels that transit the Canal should normally save distance, time and operating cost. During the current economic recession and low fuel prices, longer shipping routes may be chosen to avoid the Canal transit fees. Harsh weather conditions may be encountered along these lengthy routes resulting in higher stresses
-
Regulatory gaps between LNG carriers and LNG fuelled ships J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-01-29 Seung-man Ha; Won-Ju Lee; Byongug Jeong; Jae-Hyuk Choi; Jun Kang
Given a number of marine vessels treating the liquefied natural gas either as cargo or fuel, this paper examined the regulatory gaps of two different international Codes – the International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk and the International Code of Safety for Ships Using Gases or Other Low-flashpoint Fuels – from the regulatory standpoint. Results
-
Container ships: fire-related risks J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-01-28 Frey Gerner Callesen; Maurice Blinkenberg-Thrane; John Robert Taylor; Igor Kozine
The paper describes a study on fire accidents taking place aboard container ships. In total, 39 confirmed container ship fire accidents were discovered in the period 1996-2017. An epidemiological hazard analysis disclosed four high-consequence hazardous cargos that are calcium hypochlorite, compressed charcoal briquette products, rechargeable batteries and divinylbenzene. Cause-consequence analyses
-
Hydrodynamic response of a semi-submersible platform to support a wind turbine J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-01-28 Mehdi Shokouhian; Monique Head; Junwon Seo; William Schaffer; Gareth Adams
In this research, a numerical investigation on the hydrodynamic response of a semisubmersible platform, developed by DeepCwind consortium, equipped with the National Renewable Energy Laboratory 5-MW reference wind turbine, and a typical 6-MW wind turbine is conducted. The main objective is to develop a numerical model validated by experimental test results of a semisubmersible platform with mooring
-
The evaluating on EEDI and fuel consumption of an inland river 800PCC integrated with solar photovoltaic system J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-01-28 Chengqing Yuan; Pengcheng Pan; Yuwei Sun; Xinping Yan; Xujing Tang
In recent years, the inland river shipping industry in China has been facing the pressure to comply with ‘low carbon shipping’ policies. Solar energy as one of the most widely used new energy sources has attracted more and more attention in the shipping industry. In 2015, the researchers from Wuhan University of Technology have successfully applied solar energy in an inland river 800PCC (Pure Car Carrier) –
-
Computation of mooring chain with the touchdown on an inclined seabed J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-01-28 Milan Batista; Marko Perkovič
In this article, we discuss the effects of touchdown on an inclined seabed of a mooring system consisting of one or two chains joined at the sinker that is subjected to horizontal tension or tension at the suspension point. We modeled the statics of the system using the classical non-extensional catenary theory. For a system without a sinker, we provide an analytical solution for the governing equations
-
Evaluating the possibility of utilizing hollow fiber membranes for recovering VOC generated by oil tankers J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2019-01-27 Yoo Youl Choi; Jeon Ha Kim; Kang Woo Chun
In this research, we evaluated the possibility of using hollow fibre membranes combined with a VOC recovery system to recover high-capacity of VOCs in crude oil loading conditions. We initially investigated the performance of a basic membrane module under various conditions, and then developed and tested a large-scale membrane system. The ranges of conditions were determined based on practical and
-
Robust backstepping ship autopilot design J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2018-12-12 Aditi Bhatt; Swarup Das; S. E. Talole
ABSTRACT A ship is always under the influence of matched as well mismatched uncertainties and external disturbances owing to its operational environment and, therefore, designing an autopilot that offers uniform performance in the presence of uncertainties and disturbances poses a challenging task. In this work, to address the issue, control design based on adaptive backstepping robustified by Uncertainty
-
A novel ship energy efficiency model considering random environmental parameters J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2018-11-19 Ailong Fan; Xinping Yan; Richard Bucknall; Qizhi Yin; Sheng Ji; Yuanchang Liu; Rui Song; Xiaping Chen
Energy efficiency management is becoming increasingly important in the trend towards decarbonisation and intelligentisation of future ships. Establishing a verified energy efficiency model is essential in realising reliable assessment of various energy efficiency strategies. Based on a 53,000-tonne bulk carrier, modelling and verification of a ship’s energy efficiency with consideration of multiple
-
An investigation of remediation and recovery of oil spill and toxic heavy metal from maritime pollution by a new absorbent material J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2018-11-13 Anh Tuan Hoang; Xuan Duong Pham
The extremely serious effects of the marine environment pollution due to oil spill, oil slick and toxic heavy metals on the human, ecosystem, and society are clearly seen. Findings of absorbent materials with high absorption capacity and high usage efficiency are being much interested by several researchers. In this work, four samples of absorbent material fabricated after adding, respectively, 5%
-
Analytical study of subsea pipeline behaviour subjected to axial load in free-span location J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2018-10-25 Iman Seyfipour; Mohammad Reza Bahaari
Installation of un-trenched marine pipelines on an uneven seafloor usually leads to many free-span formations along the pipeline. Also, offshore pipelines may be subjected to high longitudinal forces that can change pipeline behaviour in diverse loading states. In this paper, the effect of axial force on pipeline deformation at the free-span location and associated hazards are assessed. The excessive
-
Featured risk evaluation of nautical navigational environment using a risk cloud model J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2018-10-24 Yan-Fei Tian; Li-Jia Chen; Li-Wen Huang; Jun-Min Mou
In this paper, a risk cloud model (RCM) based on cloud model theory is proposed for evaluating risks in the nautical navigational environment (NNEt). To validate the method, the proposed strategy is applied to a risk evaluation of NNEt of the waters around the Hangzhou Bay Sea-Crossing Bridge and the results are compared with those of a conventional fuzzy theory-based evaluation approach. The results
-
Inertial navigation system gyroscopic on-line calibration assisted by marine star sensor based on forgetting factor selection of a Sage-Husa filter J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2018-10-22 Qiuying Wang; Minghui Zhang
In the process of ship autonomous navigation, the complex changes of the external environment lead to unknown statistical characteristics of star sensor measurement noise, which brings the estimation results of standard Kalman filtering divergence, and gyroscope on-line calibration cannot be effectively carried out. In view of the above problems, this paper proposed a gyroscope on-line calibration
-
Velocity tracking controller for simulation analysis of underwater vehicle model J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2018-10-16 Przemyslaw Herman
ABSTRACT A method for dynamics analysis of underwater vehicles is presented in this paper. The strategy consists of two stages. At the first stage, we propose an adaptive velocity tracking controller for the vehicle. The control algorithm is expressed in terms of transformed equations of motion in which the inertia matrix is diagonal. Consequently, it takes into account the dynamics of the system and
-
Prediction of the density and viscosity of biodiesel and the influence of biodiesel properties on a diesel engine fuel supply system J. Mar. Eng. Technol. (IF 1.049) Pub Date : 2018-10-12 Anh Tuan Hoang
Biodiesel has been considering as promising fuel in the situation of ever-depleting fossil fuels and serious environment pollution. Beside clearly known advantages, high viscosity and density, and high surface tension are the acute disadvantages that need to be improved to use directly for an unmodified diesel engine. In this work, 24 samples of biodiesel–diesel fuel blends created by mixing respectively
Contents have been reproduced by permission of the publishers.