Detail publikace
The influence of spill-line geometry on a spray generated by a pressure-swirl atomizer
MALÝ, M. JANÁČKOVÁ, L. JEDELSKÝ, J. JÍCHA, M.
Anglický název
The influence of spill-line geometry on a spray generated by a pressure-swirl atomizer
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
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.
Anglický abstrakt
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.
Klíčová slova anglicky
Spill-line, Pressure-swirl, Phase Doppler Anemometry,
Vydáno
28.03.2016
Nakladatel
EDP Sciences
ISSN
2100-014X
Kniha
EPJ Web of Conferences
Ročník
114
Číslo
2016
Strany od–do
1–6
Počet stran
6
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",
volume="114",
number="2016",
month="March",
pages="1--6",
publisher="EDP Sciences",
issn="2100-014X"
}