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http://hdl.handle.net/2152/444
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| Title: | Acoustic modification of sooting combustion [electronic resource] |
| Authors: | Martin, Karl Matthew.
Ezekoye, Ofodike A. |
| Keywords: | Engineering, Mechanical. |
| Issue Date: | 27-Jan-2006 |
| Publisher: | The University of Texas at Austin |
| Abstract: | Acoustic-combustion interactions have interesting potential as a pollution control technology. Studies by a number of authors have shown it to be effective in reducing emissions of NOx and CO from flames, and suppression of soot in flames has been indicated qualitatively. In order to understand the interaction of high intensity acoustics with sooting flames, a laminar co-flow acetylene burner apparatus was developed which allowed a gaseous jet flame to be acoustically driven at sound pressure levels above 140 dB. It was found that the acoustic field could somewhat increase soot emissions from the flame, and could also completely suppress soot emissions from the flame, depending on the frequency and intensity of the acoustic driving. Acoustic driving changed the shape of the flame, creating a pulsed shape. High speed video of the pulsations showed that the acoustic driving was imposing a velocity on the flame that was proportional to, and of the same order as, the first-order RMS acoustic particle velocity. This velocity is comparable to, or greater than, the fuel jet velocity. |
| URI: | http://hdl.handle.net/2152/444 |
| Appears in Collections: | Theses and Dissertations from The University of Texas at Austin
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