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DYNAMICS OF A BOUNDARY LAYER SEPARATION

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    0323613 - ÚT 2010 RIV CZ eng J - Journal Article
    Uruba, Václav - Knob, Martin
    DYNAMICS OF A BOUNDARY LAYER SEPARATION.
    [Dynamika odtržení mezní vrstvy.]
    Engineering Mechanics. Roč. 16, č. 1 (2009), s. 29-38. ISSN 1802-1484
    R&D Projects: GA ČR GA101/08/1112
    Institutional research plan: CEZ:AV0Z20760514
    Keywords : boundary layer * triple-deck theory * Time-Resolved PIV
    Subject RIV: BK - Fluid Dynamics

    Dynamical behavior of a boundary layer separation is studied using both theoretical analysis and experimental approach. The dynamical nature of the phenomenon is demonstrated on a simple case of a boundary layer in adverse pressure gradient studied experimentally. The Time-Resolved PIV technique was used to study instantaneous structure of the separation region and its time development. Distinctive coherent structures and their dynamical behavior were identified using the BOD method.

    Experimentálně je studována dynamika odtržení mezní vrstvy za působení nepříznivého gradientu tlaku. Pro měření je použita metoda Time-resolved PIV, pro analýzu dynamického chování potom metoda Bi-ortogonální dekompozice. Byly určeny typické dynamické struktury, které se vyskytují v oblasti odtržení.
    Permanent Link: http://hdl.handle.net/11104/0171518

     
     
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