Abstract
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 language | English |
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| Pages (from-to) | 51-58 |
| Journal | Australian Journal of Mechanical Engineering |
| Volume | 5 |
| Issue number | 1 |
| Publication status | Published - 2008 |