Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering)
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) was originally founded in 1959. The publisher of the journal is Wuhan University of Technology. JWUT first got the scopus license in the year 2001. The journal generally publishes all aspect of engineering sciences like: physics, chemistry, mathematics, and all sorts of general engineering.
Scopus Indexed(2023)
Submission Deadline
Volume
47
, Issue
06
15 Dec 2023
Day
Hour
Min
Sec
Publish On
Volume
47
, Issue
06
31 Dec 2023
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering)
Aim and Scopes
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) (ISSN:2095-3844) is a peer-reviewed journal. The journal covers all sort of engineering topic as well as mathematics and physics. the journal's scopes are in the following fields but not limited to: :
Electrical Engineering and Telecommunication Section:
Computer Science Section :
Civil and architectural engineering :
Mechanical and Materials Engineering :
kinematics and dynamics of rigid bodies, theory of machines and mechanisms, vibration and balancing of machine parts, stability of mechanical systems, mechanics of continuum, strength of materials, fatigue of materials, hydromechanics, aerodynamics, thermodynamics, heat transfer, thermo fluids, nanofluids, energy systems, renewable and alternative energy, engine, fuels, nanomaterial, material synthesis and characterization, principles of the micro-macro transition, elastic behavior, plastic behavior, high-temperature creep, fatigue, fracture, metals, polymers, ceramics, intermetallics. Shenyang Jianzhu Daxue Xuebao (Ziran Kexue Ban)/Journal of Shenyang Jianzhu University (Natural Science) General Medicine (ISSN:1311-1817) Chinese Journal of Evidence-Based Medicine Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Lizi Jiaohuan Yu Xifu/Ion Exchange and AdsorptionChemical Engineering :
Food Engineering :
Physics Section:
Mathematics Section:
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering)
Study on Self-healing Rate of Polymer Modified Asphalt Based on Surface Free Energy
Fatigue cracking is one of the main diseases that affect pavement durability. Understanding the relationship between the self-healing ability and fatigue life of asphalt materials from the molecular level will aid in the preventive maintenance and improvement of asphalt pavement. This work analyzes the research progress on the self-healing of asphalt and asphalt mixtures, including self-healing mechanism, influencing factors, evaluation methods, and improvement aspects. Factors affecting the self-healing performance are categorized as internal, such as molecular structure, asphalt motion and diffusion, asphalt viscoelasticity, and thixotropy, and external, such as humidity, temperature, induction conditions, and time. The self-healing performance can be adjusted by optimizing the chemical composition of the asphalt materials, changing the preparation method, and ensuring the spontaneous structure formation to achieve the intellectualization of the intrinsic material. This work sheds light on the design of materials and structures for durable pavement from the perspective of the self-healing behavior of asphalt materials.
Calculation of Minor Maintenance Cost of Highway Traffic Safety Facilities
With the evolution of better highway services and larger traffic volume, the traditional maintenance management indicators can no longer satisfy the demands of highway traffic safety. In order to ensure timely, fast, safe, and reliable highway maintenance and repair, this paper proposes a road traffic safety maintenance evaluation method. The fuzzy maintenance evaluation method based on the gray correlation degree is used to construct the safety maintenance evaluation model. The damaged characteristics of the high-grade highway components are analysed. The parameters of the evaluation model are established using the analytic hierarchy process, and the accuracy of the model is verified through experiments. The results show that the safety service level can intuitively measure the maintenance and repair status of various transportation facilities. When the safety level is 1 (above 87 points) or 2 (above 85 points), the road maintenance and repair are in good condition and the road users have a high level of satisfaction on safety; when the safety level is 3 or 4 (80 points or less), it reflects that there are weak links in the road components, and targeted maintenance repairs are required. The results provide references for highway safety maintenance decision-making and improvement of highway traffic safety services to some extent.
Research on Intelligent Layout Optimization Design Method of Ship Cabin Based on Modular Design
The design of the ship cabin layout is a multi-objective comprehensive optimization problem, which needs to consider the location of the passage, cabin layout, space utilization ratio, functional realization, comfort, safety, and so on. In this paper, an improved tabu-criterion genetic algorithm for the intelligent design of ship cabin layout is proposed. According to the characteristics of ship accommodation cabin layout design, a ship deck layout area model and a multi-objective optimization model including relative location model, absolute location model, and ergonomic constraint model are established. The neighborhood transformation criterion and tabu-criterion of tabu search algorithm are introduced into genetic algorithm to advance the local search ability of a genetic algorithm. At the same time, a new genetic algorithm coding method is proposed to avoid the generation of illegal solutions in cabin layout sequence crossover and mutation operation. The improved genetic algorithm can effectively improve the local search ability of a genetic algorithm and make the algorithm converge to the optimal solution as soon as possible at the later stage of calculation. Finally, the simulation results verify the feasibility and efficiency of the proposed intelligent design method for ship accommodation cabin layout.
Study on Flow Allocation of Emergency Evacuation Path in Subway Station under Emergency
To estimate evacuation capacity of subway stations under emergency conditions, a bilevel programming model of evacuee equilibrium is built by considering travel time on walking facilities with various congestion degrees. The upper-level model ensures the maximum utilization of facilities, whereas the lower level model is to minimize the evacuation time by determining how to guide evacuees to arrive at safety zones. An improved particle swarm optimization algorithm is designed to solve the model. To validate the model and algorithm, by taking capacity estimation of Fuxingmen Station of Beijing Subway as an example, evacuation process is simulated to get the optimal routes and proper estimation. Evacuation passenger flow per unit time and network crowdedness are selected as indexes to estimate the capacity of station under emergency condition. The results show that the capacity of Fuxingmen Station is 1,071 persons per minute in the adverse situation.
Study on Maneuverability of Ultra Large Container Ship in Wind
Transport activities contribute significantly to the air pollution and its impact on emissions is a key element in the evaluation of any transport policy or plan. Calculation of emissions has therefore gained institutional importance in the European Community. Recently, the scientific community has assessed evidence that exposure to outdoor air pollution causes lung cancer and increases the risk of bladder cancer. Because air pollution in urban areas is mainly caused by transportation, it is necessary to evaluate pollutant exhaust emissions from vehicles during their real-world use. Nevertheless their evaluation and reduction is a key problem, especially in the cities, that account for more than 50% of world population. To obtain emission factors several methods make use only of vehicle mean velocity, which can be easily obtained by vehicle flow and density in the road. Among them it is worth mentioning COPERT IV, MOBILE, INFRAS, MEET models that are widely used in the practice. In ARTEMIS FP project, a new statistical approach has been developed capable to consider more attributes than the simple mean speed to characterize driving behaviour, not only in the determination of driving cycles but also in the emission modelling. In this context, a meso scale emission model, named KEM, Kinematic Emission Model, able to calculate emission factor was developed. However, it is necessary to consider that the input to this model is, in any case, the driving cycle, and that to develop a quantitative method capable to determine the exact mix of driving cycle, on the basis of road characteristics and traffic management rules, results a very hard job. In addition a particular attention could be given to the slope variability along the streets during each journey performed by the instrumented vehicle. So in this paper we try to develop a second version of KEM model that dealt with the problem of describing and introducing same variables relative to road gradient variability in a quantitatively way. In the context of correlation study between driving cycles/emission/geographical location, we have to solve some problems for the reconstruction of GPS coordinates and altitude, during an experimental campaign realized with an instrumented car.
Flexural Stiffness Calculation of Cracked Reinforced Concrete Beams Based on Crack Distribution
A fictitious crack model is introduced into cracked reinforced concrete beams to assess the changing beam stiffness under loads. Firstly, nonlinear concrete stress distributions near cracks are built based on the model. Then the stress of the steel bar at the cracked section is considered as cohesive stress. The concrete and steel stresses are substituted into the equilibrium equations of forces to solve the concrete stress. Based on the solution, the section inertias are estimated by iterating the calculation of the cracking open displacement, and finally the beam stiffness is assessed. Experimental data from seven concrete beams after cracking are adopted to validate the effectiveness of the proposed method, and the results show that the fictitious cracks ahead of actual cracks increase their depth with the load, which will raise the neutral axis and change the inertias of cracked sections and their neighboring sections. These changes are taken into account in the stiffness assessment, so the results predicted by the proposed method are shown to coincide well with the nonlinear deflections measured in the experiments.
Research on Ship Automatic Positioning Method Based on Navigation Radar
The purpose of this study is to provide a fast, continuous and accurate alternative positioning method for coastal ships under the condition of abnormal satellite positioning; On the basis of the traditional artificial radar location, a position information based on the reference target is developed, the target tracking function of radar is applied, the distance and azimuth data of the reference target to the ship are automatically collected, and the automatic radar location method of the ship's position is determined by means of the mathematical model of track; Through the experimental calculation and the real ship data, it is proved that the radar location with high precision can be realized under the condition that the reference target position information is obtained accurately.
3D Modeling and Simulation of Inland Water Flow for Ship Manipulation Simulator
The paper presents a software system for interactive 3D simulations of offloading operations commonly executed in offshore scenarios. The system was developed to simulate an LNG vessel approaching or departing from a FPSO unit or LNG tanker in 3D Virtual Environment. However, it has the capabilities of a global purpose manoeuvring simulator, including state of the art models of manoeuvrability, sea-keeping and sea surface simulations, which are integrated into the system. Additionally to common real-time physically based manoeuvrability simulators, this simulator also includes real-time ship motions calculations. The system architecture is composed of three main modules that support interaction and real-time data exchange with the integrated mathematical models. The manoeuvrability module allows the user to control the steering gear, the main engine and the bow thrusters, through the Virtual Environment. The seakeeping module computes wave induced ship motions in real-time according to ship's position, heading and speed, based on pre-calculated response amplitude operators. The sea surface module generates and simulates sea states defined by wave spectra. The system takes advantage of the programmable capabilities of the graphics processor units to increase the performance and realism of the simulations. The simulator may be used by operation planners and ship masters, as a tool for testing and training different offloading scenarios and approaching manoeuvres.
Performance Simulation of Hydrous Ethanol Reformer Based on FLUENT
Proton Exchange Membrane Fuel Cell (PEMFC) has been recognized to be the potential source for future vehicles due to environmentally friendly. Supplying hydrogen for mobile vehicles is becoming of interest since storing compressed hydrogen in the bottle is not only dangerous but also energy consuming. One way to overcome the drawback is by performing the ethanol steam reforming in situ. In this way, microreactor offers the potential benefit to convert ethanol to hydrogen due to very fast mass and heat transfer. Fluid dynamics inside the microreactors and the kinetic aspects for ethanol steam reforming using Pt/Al2O3 catalyst were investigated with aim to determine the proper microreactor design having uniform fluid distribution and to study the influence of reaction temperature, fluid velocity, and reactor length. It was found that placing an obstacle inside the microreactors in certain position gave more uniform distribution of fluid flow. The reaction temperature and fluid velocity showed their influence on hydrogen productivity.
The Effect of Alternative Fuels on Engine Power and Emissions
Marine engines often use diesel as an alternative fuel to improve the economy. In recent years, waste oil, biodiesel and alcohol fuel are the most famous research directions among the alternative fuels for diesel. With the rapid development of the shipping industry, the air of coastal areas is becoming increasingly polluted. It is now necessary to reduce the emission of marine engines to meet the strict emission regulations. There are many types of alternative fuels for diesel oil and the difference of the fuel may interfere with the engine emissions; however, PM, HC, CO and other emissions will have a negative impact on SCR catalyst. This paper reviews the alternative fuels such as alcohols, waste oils, biodiesel made from vegetable oil and animal oil, and then summarizes and analyzes the influence of different alternative fuels on engine emissions and pollutant formation mechanism. In addition, this paper also summarizes the methods that can effectively reduce the emissions of marine engines; it can provide a reference for the study of diesel alternative fuel and the reduction of marine engine emissions.
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/Journal of Wuhan University of Technology (Transportation Science and Engineering)