Planar imaging of scalar fields in a two phase turbulent jet

I. M. Kennedy, S. Starner, R. W. Bilger

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

Abstract

Laser imaging was applied to a turbulent two phase jet. A water spray was introduced into a flow of air from a round nozzle. The air was seeded with acetone vapor. A UV laser sheet illuminated the flow field of the spray and an unintensified CCD camera imaged the resultant fluorescence. A visible laser sheet, co-planar with the UV sheet, was pulsed to provide a light source for Planar Imaging Velocimetry (PIV). PIV was used to measure the velocities of the droplets and to estimate the relative velocity between the air and the spray droplets. The impact of the dispersed phase droplets on the structure of the scalar field in the jet was found to be slight for the conditions of the experiment. The water droplets of the spray absorbed acetone and gave rise to a strong fluorescence signal that prevented quantitative estimates of scalar dissipation rates from being obtained in the two phase flow. Triple images of droplets with PIV and UV beams suggested that it might be possible to measure particle accelerations in a spray.

Original languageEnglish (US)
Title of host publicationProceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998 (Volume 2)
EditorsMC Thompson, K Hourigan, MC Thompson, K Hourigan
PublisherMonash University
Pages639-641
Number of pages3
ISBN (Print)0732620449
StatePublished - 1998
EventProceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference - Melbourne, Australia
Duration: Dec 13 1998Dec 18 1998

Other

OtherProceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference
CountryAustralia
CityMelbourne
Period12/13/9812/18/98

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Kennedy, I. M., Starner, S., & Bilger, R. W. (1998). Planar imaging of scalar fields in a two phase turbulent jet. In MC. Thompson, K. Hourigan, MC. Thompson, & K. Hourigan (Eds.), Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998 (Volume 2) (pp. 639-641). Monash University.