A Hybrid Simulation Model for Electromagnetic Launchers Including the Transient Inductance and Electromotive Force

Yogyakarta has increasing trends in the number of vehicles and consequently intensifying the traffic volume and will effect to higher emission and air pollution. Traffic lights duration plays a vital role in congestion mitigation in the critical intersections of urban areas. This study has objective to minimize the number of vehicles waiting in line by developing the hybrid simulation method. First of all, the MKJI and Webster method were calculated to determine the green traffic light. Then, the simulation model was developed to evaluate the number of vehicles waiting in line according to different duration of green traffic lights from MKJI and Webster method. A case study will then be provided in Pelemgurih intersection located in Yogyakarta, Indonesia for demonstrating the applicability of the developed method. The result shows that the duration of green traffic lights calculated by Webster method provides lower number of vehicles waiting in line. It is due to the short duration of green traffic light resulted by Webster method so that the traffic light cycle becomes shorter and it effects the number of vehicles waiting in line which is lower than MKJI method. The results obtained can help the generating desired decision alternatives that will important for Department of Transportation, Indonesia to enhance the road traffic management with low number of vehicles waiting in line.

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Magnetohydrodynamic hybrid simulation model with kinetic thermal ions and energetic particles

Plasma Physics and Controlled Fusion ◽

10.1088/1361-6587/ac0162 ◽

2021 ◽

Author(s):

Y Todo ◽

Masahiko Sato ◽

Hao Wang ◽

Malik Idouakass ◽

Ryosuke Seki

Keyword(s):

Simulation Model ◽

Hybrid Simulation ◽

Energetic Particles

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Hybrid simulation model for navigation performance evaluation of the Three Gorges–Gezhouba Dams under novel regulations

SIMULATION ◽

10.1177/00375497211072536 ◽

2022 ◽

pp. 003754972110725

Author(s):

Yu Zhang ◽

Hongwei Tian ◽

Ran Li ◽

Xiaolei Liang ◽

Jun Li

Keyword(s):

Simulation Model ◽

Yangtze River ◽

Discrete Event ◽

Hybrid Simulation ◽

Three Gorges ◽

The Yangtze River ◽

Validity And Reliability ◽

Wet Season ◽

Event Modeling ◽

The Three Gorges

As an important project on the golden waterway of the Yangtze River in China, the Three Gorges–Gezhouba Dams (TGGD) plays a pivotal role in the construction of the Yangtze River Economic Belt. To improve the efficiency and safety of ship traffic, some novel navigation regulations have been implemented that change the TGGD operation obviously. For example, a piecewise control strategy proposed in the regulations is applied to control the traffic flow of ships under a sectional manner. With the implementation of these regulations, how to understand the dynamic effects of new changes on TGGD has been an important problem. The purpose of this work is to evaluate the navigation performance of the TGGD via a data- and event-driven hybrid simulation model developed by multi-agent and discrete-event modeling theories. The model simulates the three significant navigable scenarios inherent in the actual operating environment: dry season, wet season, and flood season, reflecting the real situations. The input data come from the statistical analysis of the actual navigation data provided by the Three Gorges Navigation Administration. The validity and reliability of the model are verified by comparing the output results with actual data. Moreover, a set of test experiments are designed to explore the TGGD navigation limit and analyze the key factors that restrict the navigation capacity of the TGGD system. The work is expected to provide a certain decision support for the future cooperative scheduling optimization of the TGGD.

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