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    Theoretical and Experimental Investigation on Tip Forces and Temperature Distributions of the Brush Seal Coupled Aerodynamic Force

    Source: Journal of Engineering for Gas Turbines and Power:;2014:;volume( 136 ):;issue: 005::page 52502
    Author:
    Huang, Shouqing
    ,
    Suo, Shuangfu
    ,
    Li, Yongjian
    ,
    Wang, Yuming
    DOI: 10.1115/1.4026074
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Based on a type of threedimensional slice model of a brush seal combined with the commercial CFD software FLUENT, the study calculated the leakage flow of the brush seal. The aerodynamic forces applied on upstream and downstream bristles are analyzed and reduced to a smaller amount of point forces for analysis convenience. The frictional coefficient between the bristle material Haynes 25 and rotor material 1Cr14Mn14Ni are tested. Tip forces including normal reaction and frictional forces caused by aerodynamic forces are quantitatively investigated under conditions with and without frictions using the torque balance principle and nonlinear beam theory (by ANSYS simulations), respectively. Torques, frictional heats, and the temperature distributions of the rotor and bristle pack are studied further. Details and characteristics of the flow and temperature distributions inside the bristle pack are presented. In the experiments, besides traditional tests, such as leakage and torque tests, an infrared camera is employed to capture temperature distributions at the interface of the rotor, bristle pack and nearby zones under various pressure differentials and rotation speeds. The threedimensional slice model is firstly verified by calculating the leakages, torques and temperature distributions of the brush seal and confirmed via experimentation. The influence of various frictional coefficients and pressure differentials on tip forces, torque and temperature distributions are also examined.
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      Theoretical and Experimental Investigation on Tip Forces and Temperature Distributions of the Brush Seal Coupled Aerodynamic Force

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    http://yetl.yabesh.ir/yetl1/handle/yetl/154707
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    • Journal of Engineering for Gas Turbines and Power

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    contributor authorHuang, Shouqing
    contributor authorSuo, Shuangfu
    contributor authorLi, Yongjian
    contributor authorWang, Yuming
    date accessioned2017-05-09T01:07:37Z
    date available2017-05-09T01:07:37Z
    date issued2014
    identifier issn1528-8919
    identifier othergtp_136_05_052502.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/154707
    description abstractBased on a type of threedimensional slice model of a brush seal combined with the commercial CFD software FLUENT, the study calculated the leakage flow of the brush seal. The aerodynamic forces applied on upstream and downstream bristles are analyzed and reduced to a smaller amount of point forces for analysis convenience. The frictional coefficient between the bristle material Haynes 25 and rotor material 1Cr14Mn14Ni are tested. Tip forces including normal reaction and frictional forces caused by aerodynamic forces are quantitatively investigated under conditions with and without frictions using the torque balance principle and nonlinear beam theory (by ANSYS simulations), respectively. Torques, frictional heats, and the temperature distributions of the rotor and bristle pack are studied further. Details and characteristics of the flow and temperature distributions inside the bristle pack are presented. In the experiments, besides traditional tests, such as leakage and torque tests, an infrared camera is employed to capture temperature distributions at the interface of the rotor, bristle pack and nearby zones under various pressure differentials and rotation speeds. The threedimensional slice model is firstly verified by calculating the leakages, torques and temperature distributions of the brush seal and confirmed via experimentation. The influence of various frictional coefficients and pressure differentials on tip forces, torque and temperature distributions are also examined.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleTheoretical and Experimental Investigation on Tip Forces and Temperature Distributions of the Brush Seal Coupled Aerodynamic Force
    typeJournal Paper
    journal volume136
    journal issue5
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4026074
    journal fristpage52502
    journal lastpage52502
    identifier eissn0742-4795
    treeJournal of Engineering for Gas Turbines and Power:;2014:;volume( 136 ):;issue: 005
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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