Spray measurements and numerical analysis on an impinging jet injector

Shinsuke Matsuno, Hiroyasu Saitoh, Fumiteru Akamatsu, Masashi Katsuki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The spray characteristics of an impinging jet injector have been investigated experimentally and numerically. The droplet size distribution, the velocity and the mass flux distribution were measured using Phase-Doppler Anemometry (PDA), and approximated to distribution functions in order to obtain the input data for the numerical simulation by KIVA-3 V. The simulation indicated that the effects of turbulent dispersion on the behavior of droplets must be included in the numerical model. The local droplet size distribution is dominated by the turbulence intensity, because small droplets tend to be transported by the drag of surrounding turbulent gas flow, while the trajectories of large ones are almost straight. Computational grid sizes are also important factor because the turbulence intensity strongly depends on the radial width. Simulations with coarse grids resulted in poor predictions, in which the turbulence intensity was overestimated. It is important to choose proper grid sizes with considering the balance of the accuracy and the computational cost.

Original languageEnglish
Pages (from-to)1711-1716
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume70
Issue number695
DOIs
Publication statusPublished - 2004 Jul
Externally publishedYes

Keywords

  • CFD
  • Impinging Jet Injector
  • KIVA-3 V
  • Phase-Doppler Anemometry
  • Spray Measurement
  • Turbulent Dispersion

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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