Droplet dispersion in a round turbulent jet

Charles J. Call; Ian M. Kennedy

Droplet dispersion in a round turbulent jet

Charles J. Call, Ian M. Kennedy

Mechanical and Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English (US)
Title of host publication	28th Aerospace Sciences Meeting, 1990
Publisher	American Institute of Aeronautics and Astronautics Inc, AIAA
State	Published - 1990
Event	28th Aerospace Sciences Meeting, 1990 - Reno, United States Duration: Jan 8 1990 → Jan 11 1990

Other

Other	28th Aerospace Sciences Meeting, 1990
Country	United States
City	Reno
Period	1/8/90 → 1/11/90

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.

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AU - Kennedy, Ian M.

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AB - 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.

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M3 - Conference contribution

AN - SCOPUS:85003443700

BT - 28th Aerospace Sciences Meeting, 1990

PB - American Institute of Aeronautics and Astronautics Inc, AIAA

T2 - 28th Aerospace Sciences Meeting, 1990

Y2 - 8 January 1990 through 11 January 1990

ER -