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    Flow Induced Energy Losses in the Exhaust Port of an Internal Combustion Engine

    Source: Journal of Fluids Engineering:;2015:;volume( 137 ):;issue: 001::page 11105
    Author:
    Wang, Yue
    ,
    Semlitsch, Bernhard
    ,
    Mihaescu, Mihai
    ,
    Fuchs, Laszlo
    DOI: 10.1115/1.4027952
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A numerical study of the flow in the exhaust port geometry of a Scania heavyduty diesel engine is performed using the large eddy simulation (LES) and an unsteady ReynoldsAveraged Navier–Stokes (URANS) simulation approach. The calculations are performed at fixed valve positions and stationary boundary conditions to mimic the setup of an air flow bench experiment, which is commonly used to acquire input data for onedimensional engine simulations. The numerical results are validated against available experimental data. The complex threedimensional (3D) flow structures generated in the flow field are qualitatively assessed through visualization and analyzed by statistical means. For low valve lifts, the major source of kinetic energy losses occurs in the proximity of the valve. Flow separation occurs immediately downstream of the valve seat. Strong helical flow structures are observed in the exhaust manifold, which are caused due an interaction of the exhaust port streams in the port geometry.
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      Flow Induced Energy Losses in the Exhaust Port of an Internal Combustion Engine

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/158171
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    • Journal of Fluids Engineering

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    contributor authorWang, Yue
    contributor authorSemlitsch, Bernhard
    contributor authorMihaescu, Mihai
    contributor authorFuchs, Laszlo
    date accessioned2017-05-09T01:18:40Z
    date available2017-05-09T01:18:40Z
    date issued2015
    identifier issn0098-2202
    identifier otherfe_137_01_011105.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/158171
    description abstractA numerical study of the flow in the exhaust port geometry of a Scania heavyduty diesel engine is performed using the large eddy simulation (LES) and an unsteady ReynoldsAveraged Navier–Stokes (URANS) simulation approach. The calculations are performed at fixed valve positions and stationary boundary conditions to mimic the setup of an air flow bench experiment, which is commonly used to acquire input data for onedimensional engine simulations. The numerical results are validated against available experimental data. The complex threedimensional (3D) flow structures generated in the flow field are qualitatively assessed through visualization and analyzed by statistical means. For low valve lifts, the major source of kinetic energy losses occurs in the proximity of the valve. Flow separation occurs immediately downstream of the valve seat. Strong helical flow structures are observed in the exhaust manifold, which are caused due an interaction of the exhaust port streams in the port geometry.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleFlow Induced Energy Losses in the Exhaust Port of an Internal Combustion Engine
    typeJournal Paper
    journal volume137
    journal issue1
    journal titleJournal of Fluids Engineering
    identifier doi10.1115/1.4027952
    journal fristpage11105
    journal lastpage11105
    identifier eissn1528-901X
    treeJournal of Fluids Engineering:;2015:;volume( 137 ):;issue: 001
    contenttypeFulltext
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