Characterisation of the mean flow of a micro-injector induced swirling jet

I.K. Toh, Philippa O'Neill, D. Honnery, J. Soria

    Research output: Contribution to journalArticlepeer-review


    A novel method for generating swirl promises control of the associated parameters,namely Reynolds number (Re) and swirl number (S). It is a refi nement of the method that combinesa tangential and an axial fl ow, using micro-injectors to introduce the tangential fl ow. The rateof fl ow supplied to the axial jet and the micro-injectors can be varied independently over a widerange, thereby enabling precise control of the fl ow parameters. This level of control is required wheninvestigating the critical, but incompletely understood, fl ow phenomena associated with swirlingfl ows. Multi-grid cross-correlation digital particle image velocimetry (MCCDPIV) was used tomeasure the mean fl ow velocity fi eld of the micro-injector induced swirling jet for swirl numbersranging from 0.074-0.199 and Reynolds number around 4500. For the swirl numbers examined,results show that this method of swirl generation provides similar outcomes to other more traditionalmethods.
    Original languageEnglish
    Pages (from-to)51-58
    JournalAustralian Journal of Mechanical Engineering
    Issue number1
    Publication statusPublished - 2008


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