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    Railway Air Brake Model and Parallel Computing Scheme

    Source: Journal of Computational and Nonlinear Dynamics:;2017:;volume( 012 ):;issue: 005::page 51017
    Author:
    Wu, Qing
    ,
    Cole, Colin
    ,
    Spiryagin, Maksym
    ,
    Wang, Yucang
    ,
    Ma, Weihua
    ,
    Wei, Chongfeng
    DOI: 10.1115/1.4036421
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper developed a detailed fluid dynamics model and a parallel computing scheme for air brake systems on long freight trains. The model consists of subsystem models for pipes, locomotive brake valves, and wagon brake valves. A new efficient hose connection boundary condition that considers pressure loss across the connection was developed. Simulations with 150 sets of wagon brake systems were conducted and validated against experimental data; the simulated results and measured results reached an agreement with the maximum difference of 15%; all important air brake system features were well simulated. Computing time was compared for simulations with and without parallel computing. The computing time for the conventional sequential computing scheme was about 6.7 times slower than real-time. Parallel computing using four computing cores decreased the computing time by 70%. Real-time simulations were achieved by parallel computing using eight computer cores.
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      Railway Air Brake Model and Parallel Computing Scheme

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4236448
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    • Journal of Computational and Nonlinear Dynamics

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    contributor authorWu, Qing
    contributor authorCole, Colin
    contributor authorSpiryagin, Maksym
    contributor authorWang, Yucang
    contributor authorMa, Weihua
    contributor authorWei, Chongfeng
    date accessioned2017-11-25T07:20:26Z
    date available2017-11-25T07:20:26Z
    date copyright2017/15/5
    date issued2017
    identifier issn1555-1415
    identifier othercnd_012_05_051017.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4236448
    description abstractThis paper developed a detailed fluid dynamics model and a parallel computing scheme for air brake systems on long freight trains. The model consists of subsystem models for pipes, locomotive brake valves, and wagon brake valves. A new efficient hose connection boundary condition that considers pressure loss across the connection was developed. Simulations with 150 sets of wagon brake systems were conducted and validated against experimental data; the simulated results and measured results reached an agreement with the maximum difference of 15%; all important air brake system features were well simulated. Computing time was compared for simulations with and without parallel computing. The computing time for the conventional sequential computing scheme was about 6.7 times slower than real-time. Parallel computing using four computing cores decreased the computing time by 70%. Real-time simulations were achieved by parallel computing using eight computer cores.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleRailway Air Brake Model and Parallel Computing Scheme
    typeJournal Paper
    journal volume12
    journal issue5
    journal titleJournal of Computational and Nonlinear Dynamics
    identifier doi10.1115/1.4036421
    journal fristpage51017
    journal lastpage051017-11
    treeJournal of Computational and Nonlinear Dynamics:;2017:;volume( 012 ):;issue: 005
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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