MATEC Web of Conferences (Jan 2017)

The spray characteristic of gas-liquid coaxial swirl injector by experiment

  • Chen Chen,
  • Zhihui Yan,
  • Yang Yang,
  • Hongli Gao,
  • Shunhua Yang,
  • Lei Zhang

DOI
https://doi.org/10.1051/matecconf/201710804007
Journal volume & issue
Vol. 108
p. 04007

Abstract

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Using the laser phase Doppler particle analyzer (PDPA), the spray characteristics of gas-liquid coaxial swirl injector were studied. The Sauter mean diameter (SMD), axial velocity and size data rate were measured under different gas injecting pressure drop and liquid injecting pressure drop. Comparing to a single liquid injection, SMD with gas presence is obviously improved. So the gas presence has a significant effect on the atomization of the swirl injector. What’s more, the atomization effect of gas-liquid is enhanced with the increasing of the gas pressure drop. Under the constant gas pressure drop, the injector has an optimal liquid pressure drop under which the atomization performance is best.