Spray structure as generated under homogeneous flash boiling nucleation regime

M. Levy, Y. Levy, E. Sher

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

We show the effect of the initial pressure and temperature on the spatial distribution of droplets size and their velocity profile inside a spray cloud that is generated by a flash boiling mechanism under homogeneous nucleation regime. We used TSI's Phase Doppler Particle Analyzer (PDPA) to characterize the spray. We conclude that the homogeneous nucleation process is strongly affected by the initial liquid temperature while the initial pressure has only a minor effect. The spray shape is not affected by temperature or pressure under homogeneous nucleation regime. We noted that the only visible effect is in the spray opacity. Finally, homogeneous nucleation may be easily achieved by using a simple atomizer construction, and thus is potentially suitable for fuel injection systems in combustors and engines.

Original languageEnglish
Pages (from-to)414-421
Number of pages8
JournalApplied Thermal Engineering
Volume73
Issue number1
DOIs
StatePublished - 5 Dec 2014
Externally publishedYes

Keywords

  • Droplet size distribution
  • Flash boiling atomization
  • Homogeneous nucleation
  • Spray structure

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