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Multi-class dynamic network traffic flow propagation model with physical queues

Yanfeng LI, Jun LI

Frontiers of Engineering Management 2017, Volume 4, Issue 4, Pages 399-407 doi: 10.15302/J-FEM-2017041

Abstract: This paper proposes an improved multi-class dynamic network traffic flow propagation model with a considerationEach link is divided into two areas: Free flow area and queue area.link, and the vehicles of the different classes also follow FIFO in the queue area but not in the free flowThis analysis can more realistically capture the traffic flow propagation, such as interactions betweenmulti-class traffic flows, and the dynamic traffic interactions across multiple links.

Keywords： first-in-first-out (FIFO) multi-class traffic physical queues traffic flow modeling

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Integrating storm surge modeling with traffic data analysis to evaluate the effectiveness of hurricane

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6, Pages 1301-1316 doi: 10.1007/s11709-021-0765-1

Abstract: An integrated storm surge modeling and traffic analysis were conducted in this study to assess the effectivenessTraffic data were used to analyze the evacuation traffic patterns.In south-east Florida, evacuation traffic started 4 days before the hurricane’s arrival.Over-evacuation caused Evacuation Traffic Index (ETI) to increase to 200% above normal conditionspublic awareness of real-time storm surge and wind as well as integrated storm surge and evacuation modeling

Keywords： storm surge modeling traffic evacuation Hurricane Irma

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Study on realtime method of traffic flow guidance system

Cui Jianming,Ye Huaizhen

Strategic Study of CAE 2008, Volume 10, Issue 10, Pages 64-66

Abstract:

Real-time guidance system of traffic flow is information reconstructIf events occut in short periodic time, these events will inflict the normal traffic guidance.In this paper, a new and simple solution scheme is proposed by analyzing status traffic situation.technology built on the current guidance system, therefore, this conclusion can be widly applied to trafficflow guidance system.

Keywords： traffic flow guidance system simulation emergent events real-time guidance

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Evaluation of global niobium flow modeling and its market forecasting

Frontiers in Energy 2023, Volume 17, Issue 2, Pages 286-293 doi: 10.1007/s11708-022-0823-y

Abstract: Therefore, this paper will discuss different thoughts in material substitution and the substance flowof Nb throughout a static flow using Nb global data to have a better understanding of the process of

Keywords： niobium (Nb) sustainability substance flow analysis recycling industrial ecology

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Hierarchical modeling of stochastic manufacturing and service systems

Zhe George ZHANG, Xiaoling YIN

Frontiers of Engineering Management 2017, Volume 4, Issue 3, Pages 295-303 doi: 10.15302/J-FEM-2017047

Abstract: Such a classification unifies stochastic modeling theory.Such models are appropriate for modeling the detailed operations of a manufacturing system with relativelylimit theorem (FCLT) and functional strong law of large numbers (FSLLN), respectively, under heavy-trafficThese high-level models are appropriate for modeling large-scale service systems with many servers, suchThis review will help practitioners select the appropriate level of modeling to enhance their understanding

Keywords： stochastic modeling QBD process PH distribution heavy traffic limits diffusion process

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Flow and thermal modeling of liquid metal in expanded microchannel heat sink

Frontiers in Energy 2023, Volume 17, Issue 6, Pages 796-810 doi: 10.1007/s11708-023-0877-5

Abstract: The flow and thermal modeling of expanded microchannel heat sink (E-MCHS) were analyzed by both using

Keywords： liquid metal cooling heat sink expanded microchannel flow and thermal modeling

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Study for entrained-flow gasifier modeling and measurement

Zhe WANG, Zheng LI, Fen HE

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 400-403 doi: 10.1007/s11705-010-0510-0

Abstract: The syngas composition change during the measurement process was analyzed using a detailed gas phase reaction mechanism. Results showed that the measurement error induced by the temperature and pressure change in the measurement process cannot be ignored. Based on the results, suggestions were proposed for syngas concentration measurement and temperature measurement.

Keywords： entrained-flow gasifier syngas composition

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A comprehensive review of the modeling of transport phenomenon in the flow channels of polymer electrolyte

Frontiers of Chemical Science and Engineering 2024, Volume 18, Issue 8, doi: 10.1007/s11705-024-2445-x

Abstract: Reactant gas and liquid water transport phenomena in the flow channels are complex and critical to theIn contrast, numerical modeling is cheaper and faster, providing insights into the complex multiscale

Keywords： two-phase flows numerical model flow channel polymer electrolyte membrane fuel cells water management

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Framework based on building information modeling, mixed reality, and a cloud platform to support informationflow in facility management

Berardo NATICCHIA, Alessandra CORNELI, Alessandro CARBONARI

Frontiers of Engineering Management 2020, Volume 7, Issue 1, Pages 131-141 doi: 10.1007/s42524-019-0071-y

Abstract: The quality of information flow management has a remarkable effect on the entire life cycle of buildingsThe introduction of building information modeling (BIM) in the construction industry can provide a valuable

Keywords： information flow management BIM mixed reality common data environment facility management

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Reduced kinetic mechanism of -heptane oxidation in modeling polycyclic aromatic hydrocarbon formationin opposed-flow diffusion flames

ZHONG Beijing, XI Jun

Frontiers in Energy 2008, Volume 2, Issue 3, Pages 326-332 doi: 10.1007/s11708-008-0047-9

Abstract: with the multidimensional computational fluid dynamics code for quantitative description of a reacting flow, was developed for chemical kinetic modeling of polycyclic aromatic hydrocarbon formation in an opposed-flowpolycyclic aromatic hydrocarbon (such as benzene, naphthalene, phenanthrene and pyrene) formation in opposed-flow

Keywords： phenanthrene multidimensional computational sensitivity analysis polycyclic mechanism

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The computational fluid dynamic modeling of downwash flow field for a six-rotor UAV

Yongjun ZHENG, Shenghui YANG, Xingxing LIU, Jie WANG, Tomas NORTON, Jian CHEN, Yu TAN

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 2, Pages 159-167 doi: 10.15302/J-FASE-2018216

Abstract: The downwash flow field of the multi-rotor unmanned aerial vehicle (UAV), formed by propellers duringThe entire flow field surrounding the UAV and the rotation flow fields around the six rotors were establishedThe physical model and flow fields were meshed using unstructured tetrahedral elements in ANSYS softwareFinally, the downwash flow field of UAV was simulated.

Keywords： CFD simulation downwash flow field numerical analysis plant protection six-rotor UAV

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Simulation of abrasive flow machining process for 2D and 3D mixture models

Rupalika DASH,Kalipada MAITY

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4, Pages 424-432 doi: 10.1007/s11465-015-0366-6

Abstract: surface finish and material removal has been quite a challenge in a finishing operation such as abrasive flowmaterial removal are media viscosity, extrusion pressure, piston velocity, and particle size in abrasive flowIn the current work, a 2D model was designed, and the flow analysis, force calculation, and materialTwo phases were considered for the flow analysis, and multiphase mixture model was taken into accountThe fluid was considered to be a Newtonian fluid and the flow laminar with no wall slip.

Keywords： abrasive flow machining (AFM) computational fluid dynamics (CFD) modeling mixture model

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Discrete element method modeling of corn-shaped particle flow in rectangular hopper

He TAO, Baosheng JIN, Wenqi ZHONG, Xiaofang WANG,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2, Pages 267-275 doi: 10.1007/s11709-010-0035-0

Abstract: Discrete element method (DEM) was developed to simulate the corn-shaped particles flow in the hopper.And the velocity distribution is more uniformity and is closer to the mass flow with the friction coefficient

Keywords： discrete  element   method  (DEM)   non-spherical voidage pressure velocity distribution hopper

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Modeling the gas flow in a cyclone separator at different temperature and pressure

Gujun WAN, Guogang SUN, Cuizhi GAO, Ruiqian DONG, Ying ZHENG, Mingxian SHI

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 498-505 doi: 10.1007/s11705-010-0502-0

Abstract: The gas flow field in a cyclone separator, operated within a temperature range of 293 K – 1373 K andThe outer downward flow rate increases with a temperature increase, whereas it decreases with a pressureis strong in the region of 0 – 0.25 below the vortex finder entrance, which is named as a short-cut flowcalculate the combined effects of temperature and pressure on the tangential velocity, the downward flowrate in the cyclone and the centripetal radial velocity in the short-cut flow region underneath the

Keywords： cyclone separator high temperature high pressure flow field numerical simulation

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Exploring the factors of major road traffic accidents: A case study of China

Frontiers of Engineering Management doi: 10.1007/s42524-024-4059-x

Abstract: Many scholars have investigated the factors influencing traffic accidents to find the underlying mechanisms, thereby enhancing road traffic safety.Compared to general accidents, the factors influencing major road traffic accidents are more complex.Data on 968 major road traffic accidents from 2012 to 2018 in China were collected and organized.safety and reduce the occurrence of traffic accidents.

Keywords： road safety traffic accidents influencing factor association rules apriori algorithm