Shock-induced mixing of a light-gas cylinder

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Abstract

Discusses experiments to quantify the mixing induced by the interaction of a weak shock wave with a cylindrical volume of a gas (helium) that is lighter than its surroundings (air). A round laminar jet was used to produce the light gas cylinder, and planer laser induced fluorescence (PLIF) used for flow visualization. The distortion of the helium cylinder, and downstream displacement of several points on the boundary of the light gas cylinder, were similar to other experimental and computational findings. As the PLIF image area inside the contour (at one half the maximum concentration of the tracer) decreases as the two gases are mixed, a measure of mixing rate is obtained as -0.7 X10 "SUP 3" s "SUP -1" (time rate of change in the image area divided by area of the initial jet). (from Author)

Original languageEnglish (US)
Pages (from-to)629-649
Number of pages21
JournalJournal of Fluid Mechanics
Volume234
StatePublished - 1992

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Gas cylinders
Helium
Fluorescence
shock
Lasers
Flow visualization
Gases
gases
Shock waves
laser induced fluorescence
helium
laminar jets
flow visualization
Air
tracers
shock waves
Experiments
air
interactions

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Shock-induced mixing of a light-gas cylinder. / Jacobs, Jeffrey W.

In: Journal of Fluid Mechanics, Vol. 234, 1992, p. 629-649.

Research output: Contribution to journalArticle

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