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    LARGE-EDDY SIMULATIONS OF A SEPARATION/REATTACHMENT BUBBLE IN A TURBULENT-BOUNDARY-LAYER SUBJECTED TO A PRESCRIBED UPPER-BOUNDARY, VERTICAL-VELOCITY PROFILE

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    Type
    Conference Paper
    Authors
    Cheng, Wan
    Pullin, D. I.
    Samtaney, Ravi cc
    KAUST Department
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2015-06-30
    Permanent link to this record
    http://hdl.handle.net/10754/566965
    
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    Abstract
    We describe large-eddy simulations of turbulent boundary-layer flow over a flat plate at high Reynolds number in the presence of an unsteady, three-dimensional flow separation/reattachment bubble. The stretched-vortex subgrid-scale model is used in the main flow domain combined with a wall-model that is a two-dimensional extension of that developed by Chung & Pullin (2009). Flow separation and re-attachment of the incoming boundary layer is induced by prescribing wall-normal velocity distribution on the upper boundary of the flow domain that produces an adverse-favorable stream-wise pressure distribution at the wall. The LES predicts the distribution of mean shear stress along the wall including the interior of the separation bubble. Several properties of the separation/reattachment flow are discussed.
    Journal
    Proceedings of Ninth International Symposium on Turbulence and Shear Flow Phenomena (TSFP-9)
    Conference/Event name
    Ninth International Symposium on Turbulence and Shear Flow Phenomena (TSFP-9)
    Additional Links
    ftp://tepeu.sisal.unam.mx/TSFP9/full_paper/9D-1.pdf
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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