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    Modeling Deposit Erosion in Internal Turbine Cooling Geometries

    Source: Journal of Engineering for Gas Turbines and Power:;2020:;volume( 142 ):;issue: 003
    Author:
    Libertowski, Nathan D.
    ,
    Geiger, Gabriel M.
    ,
    Bons, Jeffrey P.
    DOI: 10.1115/1.4045954
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Experiments were performed to study the erosion of deposit structures due to large particle impacts (>5 μm). Cone-shaped dust deposits were created in an oversized (6.35 mm diameter) impingement cooling jet at 811 K with 0–5 μm Arizona road dust (ARD). Subsequently, the deposit cones were eroded with larger particle distributions (5–10, 10–20, 20–40, and 40–80 μm ARD) at various velocities and temperatures. It was found that erosion rate increased with increasing particle size and flow velocity and with decreasing temperature. The dependency on size and velocity occurs through the particle's kinetic energy at impact, while the dependency on temperature is related to the adhesive forces in the deposit structure. Using the experimental data, an empirical erosion model was developed to be added to the Ohio State University (OSU) deposition model. A computational flow simulation combined with mesh morphing is shown to capture key features of the erosion physics.
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      Modeling Deposit Erosion in Internal Turbine Cooling Geometries

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4273909
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    • Journal of Engineering for Gas Turbines and Power

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    contributor authorLibertowski, Nathan D.
    contributor authorGeiger, Gabriel M.
    contributor authorBons, Jeffrey P.
    date accessioned2022-02-04T14:33:34Z
    date available2022-02-04T14:33:34Z
    date copyright2020/02/10/
    date issued2020
    identifier issn0742-4795
    identifier othergtp_142_03_031024.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4273909
    description abstractExperiments were performed to study the erosion of deposit structures due to large particle impacts (>5 μm). Cone-shaped dust deposits were created in an oversized (6.35 mm diameter) impingement cooling jet at 811 K with 0–5 μm Arizona road dust (ARD). Subsequently, the deposit cones were eroded with larger particle distributions (5–10, 10–20, 20–40, and 40–80 μm ARD) at various velocities and temperatures. It was found that erosion rate increased with increasing particle size and flow velocity and with decreasing temperature. The dependency on size and velocity occurs through the particle's kinetic energy at impact, while the dependency on temperature is related to the adhesive forces in the deposit structure. Using the experimental data, an empirical erosion model was developed to be added to the Ohio State University (OSU) deposition model. A computational flow simulation combined with mesh morphing is shown to capture key features of the erosion physics.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleModeling Deposit Erosion in Internal Turbine Cooling Geometries
    typeJournal Paper
    journal volume142
    journal issue3
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4045954
    page31024
    treeJournal of Engineering for Gas Turbines and Power:;2020:;volume( 142 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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