Droplet dispersion in a round turbulent jet

Charles J. Call, Ian M. Kennedy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

An experimental technique is described which has been used to study droplet dispersion in a round jet. Droplets are injected on the jet axis, and a laser sheet and position sensitive photodiode are used to track their radial displacement. Statistically large samples are used to calculate droplet dispersion as a function of droplet time of flight. Results are presented for 205 μm water droplets at three jet Reynolds numbers between 10,000 and 20,000. Particle diffusivity and rms particle velocity have been estimated. The measurements can be used in the direct evaluation of the sub-grid modds for dispersion, drag, and gasification used in spray modelling. The experimental methodology can be used to investigate the effect of vaporization on dispersion and to directly measure a Lagrangian particle velocity autocorrelation.

Original languageEnglish (US)
Title of host publication28th Aerospace Sciences Meeting, 1990
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
StatePublished - 1990
Event28th Aerospace Sciences Meeting, 1990 - Reno, United States
Duration: Jan 8 1990Jan 11 1990

Other

Other28th Aerospace Sciences Meeting, 1990
CountryUnited States
CityReno
Period1/8/901/11/90

ASJC Scopus subject areas

  • Aerospace Engineering

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    Call, C. J., & Kennedy, I. M. (1990). Droplet dispersion in a round turbulent jet. In 28th Aerospace Sciences Meeting, 1990 [AIAA-90-0468] American Institute of Aeronautics and Astronautics Inc, AIAA.