Unsteady fluid dynamics in a semi-closed cavity

Antonio Filippone, Jess A. Michelsen

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Results are presented for unsteady, time-true simulations of a shear driven cavity started impulsively from rest. The cavity is partially occluded by slits on its upper side, thereby forming a Helmholtz resonator type of geometry. Simulations with Reynolds-averaged Navier-Stokes solvers at the laminar Reynolds number Re=3,000, for a spanwise aspect-ratio equal to 3, showed that the flow is unsteady and a-periodic over a normalised time of one hundred units. Taylor-Görtler spanwise vortices appear early in the simulation (flow time 3 or 4 units); these vortices have a relatively short time span, and completely disappear at a flow time equal to 90. This study also reports about the findings on the secondary eddies (upstream and wall vortices), on the vortex filaments that are drawn from the cavity floor, and on the mass transport properties of the flow. Copyright © 2004 by ASME.
    Original languageEnglish
    Title of host publicationProceedings of the ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004|Proc. ASME Heat Transf. Fluids Summer Conf. HT FED
    Pages477-486
    Number of pages9
    Volume2
    Publication statusPublished - 2004
    Event2004 ASME Heat Transfer/Fluids Engineering Summer Conference, HT/FED 2004 - Charlotte, NC
    Duration: 1 Jul 2004 → …

    Conference

    Conference2004 ASME Heat Transfer/Fluids Engineering Summer Conference, HT/FED 2004
    CityCharlotte, NC
    Period1/07/04 → …

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