Visualization of the large-scale structures in an aerodynamically excited turbulent jet

Shanying Zhang, John T. Turner

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Flow visualization using a novel form of stereoscopic viewing system has been applied in the near field of an axisymmetric turbulent jet at a Reynolds number of 5000. Excitation by a pulsed co-axial annular jet strengthens the toroidal vortices arising naturally in the shear layer and creates strong secondary vorticity components. Detailed information on the evolution of the vortical structures is presented, providing an insight into their influence and suggesting how the excitation might be optimized. Finally, a Galilean transformation (relating time and distance) is used to reconstruct the complex three-dimensional structure of the excited jet. © 2010 IOP Publishing Ltd.
    Original languageEnglish
    Article number075404
    JournalMeasurement Science and Technology
    Volume21
    Issue number7
    Publication statusPublished - 2010

    Keywords

    • Aerodynamic excitation
    • Flow control
    • Flow visualization
    • Jet flow
    • Stereoscopic

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