The vortex shedding and drag associated with structural elements

I. Grant, F. H. Barnes

    Research output: Contribution to journalArticle

    Abstract

    The separated flow region in the wake of five structural elements (I-beam, T-beam, L-beam, flat plate and circular cylinder) has been investigated in a low-turbulence wind tunnel. Measurements have been made of the vortex shedding characteristics of these elements as a function of the angle of attack. Details of the drag and base-pressure coefficients are also presented for the I- and L-beams. The results are in agreement with existing codes of practice but also indicate the existence of two dominant shedding regimes for the I-, L-, and T-beams. The rapid change in the Strouhal number between these two regimes suggests that unclad structures may show significant forcing energies in widely separated frequency bands when a small change occurs in the angle of attack of the wind. © 1981.

    Original languageEnglish
    Pages (from-to)115-122
    Number of pages8
    JournalJournal of Wind Engineering and Industrial Aerodynamics
    Volume8
    Issue number1-2
    Publication statusPublished - Jul 1981

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