Erscheint 12 Ausgaben pro Jahr
ISSN Druckformat: 1044-5110
ISSN Online: 1936-2684
IF:
1.2
5-Year IF:
1.8
Immediacy Index:
0.3
Eigenfactor:
0.00095
JCI:
0.28
SJR:
0.341
SNIP:
0.536
CiteScore™::
1.9
H-Index:
57
Indexed in
ON THE SHEET BREAKUP OF DIRECT-INJECTION GASOLINE PRESSURE-SWIRL ATOMIZER SPRAYS
Get access
ABSTRAKT
An experimental study into the sheet breakup mechanisms of two direct-injection gasoline pressure-swirl atomizers has been performed under conditions of varying fuel pressure and injector back pressure. A novel method of illumination, which allows a single thickness of the hollow-cone spray to be examined, has been developed. The results of the study indicate that there are three major mechanisms contributing to the ultimate disintegration of the liquid sheet, namely, aerodynamic instability, perforated sheet breakup, and air-core induced disturbances. The relative importance of the breakup mechanisms is shown to depend on atomizer operating condition and nozzle geometry. Sheet breakup lengths determined experimentally by a void-fraction analysis were compared with the predictions of three breakup models from the literature. The comparison suggests that the models underpredict the breakup length under all but substantially subatmospheric back-pressure conditions. The results also indicate that special care is required when using existing breakup models where atomizers with offset-nozzle geometries are used.
-
Moon Yoonwan, Kim Dongjun, Yoon Youngbin, Improved Spray Model for Viscous Annular Sheets in a Swirl Injector, Journal of Propulsion and Power, 26, 2, 2010. Crossref
-
Fernandez V.G., Berthoumie P., Lavergne G., Liquid sheet disintegration at high pressure: An experimental approach, Comptes Rendus Mécanique, 337, 6-7, 2009. Crossref
-
Fansler Todd D, Parrish Scott E, Spray measurement technology: a review, Measurement Science and Technology, 26, 1, 2015. Crossref
-
Kannaiyan Kumaran, Sadr Reza, The effects of alumina nanoparticles as fuel additives on the spray characteristics of gas-to-liquid jet fuels, Experimental Thermal and Fluid Science, 87, 2017. Crossref
-
Kannaiyan Kumaran, Sadr Reza, Comparison of Near-Nozzle Spray Performance of Gas-to-Liquid and Jet A-1 Fuels Using Shadowgraph and Phase Doppler Anemometry, Journal of Energy Resources Technology, 140, 7, 2018. Crossref
-
Loustalan Paul W., Williams Paul A., Davy Martin H., Effect of Impinging Airflow on the Near Nozzle Characteristics of a Gasoline Spray from a Pressure-Swirl Atomiser, SAE Technical Paper Series, 1, 2006. Crossref
-
Liu Yang, Zhang Huiqiang, Li Yanfei, Zhao Zijie, Numerical investigation on the hole characteristics and perforation mechanism of conical liquid sheet, Thermal Science and Engineering Progress, 29, 2022. Crossref