Effects of pulsation on the flow field of turbulent impinging jets

H. Medina, E. Benard, J. M. Early

    Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

    1 Citation (Scopus)


    The current study examines the effect of pulsation on the flow field of turbulent impinging jets. Previous work identified significant differences in the transitional and turbulent jet responses to pulsation, and this study considers the effect of the Strouhal number on the structure of turbulent impinging jets. This is of particular interest due to the wide-spread use of jets (for instance, in heat and mass transfer applications), and there is an interest in the utilisation of pulsating jets as alternative to steady jets to increase heat and mass transfer rates. Preliminary findings suggest that in order to achieve improvements in heat and mass transfer rates, a turbulent jet is preferable to an equivalent transitional jet as their behaviour is easier to predict, and for a number of frequencies, they exhibit favourable flow conditions when compared to the equivalent steady jet case. The similariry in the observed turbulence characteristics between the steady and pulsating cases also suggests that a steady jet model could be a viable baseline for computational modelling of a turbulent pulsating jet.

    Original languageEnglish
    Title of host publication39th AIAA Fluid Dynamics Conference
    Publication statusPublished - 2009
    Event39th AIAA Fluid Dynamics Conference - San Antonio, United States
    Duration: 22 Jun 200925 Jun 2009


    Conference39th AIAA Fluid Dynamics Conference
    Country/TerritoryUnited States
    CitySan Antonio


    • Computational modelling
    • Flow condition
    • Heat and mass transfer
    • Pulsating jets
    • Steady jet
    • Turbulence characteristics
    • Turbulent impinging jet
    • Turbulent jet

    ASJC Scopus subject areas

    • Engineering (miscellaneous)
    • Aerospace Engineering


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