Droplet lasing spectroscopy applied to droplet stream flames

Philip J. Santangelo, Ian M. Kennedy

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Droplet lasing spectroscopy (DLS) has been applied to the measurement of droplet size and vaporization rates in both reacting and non-reacting rectilinear droplet streams. A Berglund-Liu droplet generator was used to generate a stream of droplets, approximately 63 microns in diameter and 6.5 droplet diameters apart. Ethanol, methanol, and a pentane/ethanol mixture were doped with Rhodamine 6G. Lasing spectra were examined in the steady- state combustion regime. In the pentane/ethanol case the measurements were carried out in a sooting region of the flame. In some cases, vaporization rates were high enough to measure the rate from consecutive droplets, yielding a quasi-instantaneous measurement. In all cases, the D2 law of droplet vaporization was evident. In addition photographs of the flames yielded measurements of flame height and thickness.

Original languageEnglish (US)
Pages (from-to)413-421
Number of pages9
JournalCombustion and Flame
Issue number1-2
StatePublished - Apr 1999

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Mechanical Engineering


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