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    Low Order Modeling for Fan and Outlet Guide Vanes in Aero-Engines

    Source: Journal of Turbomachinery:;2019:;volume( 141 ):;issue: 003::page 31002
    Author:
    Cui, Jiahuan
    ,
    Watson, Rob
    ,
    Ma, Yunfei
    ,
    Tucker, Paul
    DOI: 10.1115/1.4042202
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Intakes of reduced length have been proposed with the aim of producing aero-engines with higher efficiency and reduced weight. As the intake length decreases, it is expected that stronger effects of the fan on the flow over the intake lip will be seen. If the effects of the fan cannot be ignored, a low-cost but still accurate fan model is of great importance for designing a short-intake. In this paper, a low order rotor/stator model, the immersed boundary method with smeared geometry (IBMSG), has been further developed and validated on a rig test case. The improved IBMSG is more robust than the original. The rig test case used for validation features a low-pressure compression system with a nonaxisymmetric inflow, which is representative of the inlet condition of an aero-engine at its cruise condition. Both the fan and the outlet guide vanes (OGVs) are modeled using IBMSG. A detailed analysis is carried out on the flow both upstream and downstream of the fan. After validating the IBMSG method against the rig test case, a short-intake case, coupled with a fan designed for the next generation of aero-engines, is further investigated. It is found that compared with the intake-alone case, the inflow distortion at the fan face is significantly reduced by the presence of fan. Due to this increased interaction between the fan and the flow over the intake lip, accounting for the effects of the downstream fan is shown to be essential when designing a short intake.
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      Low Order Modeling for Fan and Outlet Guide Vanes in Aero-Engines

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    contributor authorCui, Jiahuan
    contributor authorWatson, Rob
    contributor authorMa, Yunfei
    contributor authorTucker, Paul
    date accessioned2019-03-17T11:20:48Z
    date available2019-03-17T11:20:48Z
    date copyright1/16/2019 12:00:00 AM
    date issued2019
    identifier issn0889-504X
    identifier otherturbo_141_03_031002.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4256904
    description abstractIntakes of reduced length have been proposed with the aim of producing aero-engines with higher efficiency and reduced weight. As the intake length decreases, it is expected that stronger effects of the fan on the flow over the intake lip will be seen. If the effects of the fan cannot be ignored, a low-cost but still accurate fan model is of great importance for designing a short-intake. In this paper, a low order rotor/stator model, the immersed boundary method with smeared geometry (IBMSG), has been further developed and validated on a rig test case. The improved IBMSG is more robust than the original. The rig test case used for validation features a low-pressure compression system with a nonaxisymmetric inflow, which is representative of the inlet condition of an aero-engine at its cruise condition. Both the fan and the outlet guide vanes (OGVs) are modeled using IBMSG. A detailed analysis is carried out on the flow both upstream and downstream of the fan. After validating the IBMSG method against the rig test case, a short-intake case, coupled with a fan designed for the next generation of aero-engines, is further investigated. It is found that compared with the intake-alone case, the inflow distortion at the fan face is significantly reduced by the presence of fan. Due to this increased interaction between the fan and the flow over the intake lip, accounting for the effects of the downstream fan is shown to be essential when designing a short intake.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleLow Order Modeling for Fan and Outlet Guide Vanes in Aero-Engines
    typeJournal Paper
    journal volume141
    journal issue3
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.4042202
    journal fristpage31002
    journal lastpage031002-9
    treeJournal of Turbomachinery:;2019:;volume( 141 ):;issue: 003
    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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