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    Characteristics of Turbulent Flows Over Forward Facing Steps in Adverse Pressure Gradients Based on Two-Point Analyses

    Source: Journal of Fluids Engineering:;2017:;volume( 139 ):;issue: 011::page 114501
    Author:
    Iftekhar, Hassan
    ,
    Agelin-Chaab, Martin
    DOI: 10.1115/1.4036666
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This study reports the results of turbulent flows forward facing steps (FFS) in pressure gradients using a particle image velocimetry (PIV) technique to obtain data up to 68 step heights downstream. The contours of two-point velocity correlations indicate that regardless of the pressure gradients, the physical size of the coherent structures characterized by the autocorrelations grows as the flow develops downstream along the step. Additionally, adverse pressure gradient (APG) elevates the size of the autocorrelations.
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      Characteristics of Turbulent Flows Over Forward Facing Steps in Adverse Pressure Gradients Based on Two-Point Analyses

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4234101
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    contributor authorIftekhar, Hassan
    contributor authorAgelin-Chaab, Martin
    date accessioned2017-11-25T07:16:38Z
    date available2017-11-25T07:16:38Z
    date copyright2017/21/7
    date issued2017
    identifier issn0098-2202
    identifier otherfe_139_11_114501.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4234101
    description abstractThis study reports the results of turbulent flows forward facing steps (FFS) in pressure gradients using a particle image velocimetry (PIV) technique to obtain data up to 68 step heights downstream. The contours of two-point velocity correlations indicate that regardless of the pressure gradients, the physical size of the coherent structures characterized by the autocorrelations grows as the flow develops downstream along the step. Additionally, adverse pressure gradient (APG) elevates the size of the autocorrelations.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleCharacteristics of Turbulent Flows Over Forward Facing Steps in Adverse Pressure Gradients Based on Two-Point Analyses
    typeJournal Paper
    journal volume139
    journal issue11
    journal titleJournal of Fluids Engineering
    identifier doi10.1115/1.4036666
    journal fristpage114501
    journal lastpage114501-6
    treeJournal of Fluids Engineering:;2017:;volume( 139 ):;issue: 011
    contenttypeFulltext
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