NDLI: Flame stability of an ultra-lean premixed low-swirl burner

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Flame stability of an ultra-lean premixed low-swirl burner

Content Provider	Semantic Scholar
Author	Strahman, Julio Gustavo
Copyright Year	2007
Abstract	Stringent emissions regulations have stimulated the development of technologies for stabilizing ultra-lean premixed flames as a means of lowering flame temperatures and reducing the formation of nitrogen oxides (NOx). One such technology is the low-swirl burner (LSB) developed by Cheng and coworkers [1-3]. A laboratory LSB was constructed, in which the inner core flow and outer annular flow are independently controlled. Stability limits of flashback and blowoff were obtained for a wide parametric range o f flowrates, equivalence ratios, and swirl numbers. A forward-backward scattering 3D particle image velocimetry system (stereoscopic PIV) was employed to quantify the swirling velocity in the reactant flow and to establish the mean flame front contour positions, which are related to stability. The current results show that the LSB stabilizes a freely propagating, turbulent flame. However the main effect o f swirl is not on the creation or modification of flow divergence, but on the flowfield velocity and turbulence intensity. This determines flame position and stability limits. Reproduced with permission of the copyright owner. Further reproduction prohibited without permission.
File Format	PDF HTM / HTML
DOI	10.22215/etd/2007-07966
Alternate Webpage(s)	https://curve.carleton.ca/system/files/etd/93783e6c-d264-42c8-adf9-ce642c1dc133/etd_pdf/e53c6a091f2c60c8406e9eb71a355dc1/strahman-flamestabilityofanultraleanpremixedlowswirl.pdf
Alternate Webpage(s)	https://doi.org/10.22215/etd%2F2007-07966
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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