Effect of Geometric Parameters on Mean Drop Sizes from Dual-orifice Nozzles

[+] Author and Article Information
Xiao Wei

AECC Hunan Aviation Powerplant Research Institute

Guo Zhenyan

AECC Hunan Aviation Powerplant Research Institute

Chen Pimin

AECC Hunan Aviation Powerplant Research Institute

1Corresponding author.

ASME doi:10.1115/1.4041079 History: Received February 11, 2018; Revised July 17, 2018


Experimental studies have been conducted to investigate the effect of nozzle geometries on the atomization. Extensive measurements of mean drop size are conducted on the fifteen dual-orifice pressure nozzles. These nozzles provide a range of discharge coefficient from 0.06 to 0.13. These experimental results are used to substantiate a semi-empirical correlation derived for determining the Sauter mean diameter (SMD) of sprays generated by dual-orifice pressure nozzles. The correlation is obtained by modeling the liquid internal and outer flow that govern the atomization process in dual-orifice pressure nozzles. A very satisfactory agreement is demonstrated between the predictions based on the correlations and the actual measured values of the SMD.

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