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MALÝ, M. JANÁČKOVÁ, L. JEDELSKÝ, J. JÍCHA, M.
Original Title
The influence of spill-line geometry on a spray generated by a pressure-swirl atomizer
Type
conference paper
Language
English
Original Abstract
An experimental investigation of characteristics of spray generated by a pressure-swirl atomizer (spill-return type) was performed using shadowgraphy and Phase-Doppler Anemometry (PDA). Several different geometries of the spill-return orifice were tested in terms of a spray stability and quality on a cold test bench. PDA measurement yields a drop-size distribution and velocity data while the shadowgraphy unveils a break-up process in detail. Performed measurements reveal significant differences in spray characteristics as well as differences in spray stability. The results suggest that the air core, formed inside the swirl chamber, passes through the spill orifice, which causes instability of the inner flow. These instabilities lead to a chaotic state of sheet breakup resulting in shortening of breakup distance. Obtained findings are used to propose possible changes in the atomizer design for improvement of its performance.
Keywords
Spill-line, Pressure-swirl, Phase Doppler Anemometry,
Authors
MALÝ, M.; JANÁČKOVÁ, L.; JEDELSKÝ, J.; JÍCHA, M.
Released
28. 3. 2016
Publisher
EDP Sciences
ISBN
2100-014X
Periodical
EPJ Web of Conferences
Year of study
114
Number
2016
State
French Republic
Pages from
1
Pages to
6
Pages count
URL
https://www.epj-conferences.org/articles/epjconf/abs/2016/09/epjconf_efm2016_02070/epjconf_efm2016_02070.html
Full text in the Digital Library
http://hdl.handle.net/11012/70147
BibTex
@inproceedings{BUT127916, author="Milan {Malý} and Lada {Janáčková} and Jan {Jedelský} and Miroslav {Jícha}", title="The influence of spill-line geometry on a spray generated by a pressure-swirl atomizer", booktitle="EPJ Web of Conferences", year="2016", journal="EPJ Web of Conferences", volume="114", number="2016", pages="1--6", publisher="EDP Sciences", doi="10.1051/epjconf/201611402070", issn="2100-014X", url="https://www.epj-conferences.org/articles/epjconf/abs/2016/09/epjconf_efm2016_02070/epjconf_efm2016_02070.html" }