Scalar spatial correlations in a supersonic mixing flowfield

Hidemi Takahashi, Hiroki Oso, Toshinori Kouchi, Goro Masuya, Mitsutomo Hirota

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

3 Citations (Scopus)

Abstract

Scalar spatial correlations in the supersonic mixing flowfield produced by a sonic transverse injection of air into a Mach 2.0 supersonic airstream were investigated using acetone planar laser-induced fluorescence (acetone PLIF) data. Side-view and end-view images were obtained in several planes to characterize the turbulent structure and three-dimensionality of the mixing flowfield. Single-time two-point spatial correlations of injectant concentration were obtained from the acetone PLIF data. Contour maps of the correlations indicated an organized large-scale structure in the upper region of the jet. Side-view correlation maps revealed that the shape of the large dominating structure was elliptic, and that its major axis turned from backward-leaning to forward-leaning as the reference point of correlation moved downstream. End-view correlation maps revealed that the instantaneous jet plume appeared by turns either in the top or in the lower sides of the timeaveraged injectant plume in each cross-section.

Original languageEnglish
Title of host publication47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
Publication statusPublished - 2009
Externally publishedYes
Event47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States
Duration: Jan 5 2009Jan 8 2009

Other

Other47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityOrlando, FL
Period1/5/091/8/09

Fingerprint

scalars
Acetone
Fluorescence
laser induced fluorescence
Lasers
acetone
Mach number
plumes
plume
contour map
Air
cross section
injection
air
cross sections

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

Cite this

Takahashi, H., Oso, H., Kouchi, T., Masuya, G., & Hirota, M. (2009). Scalar spatial correlations in a supersonic mixing flowfield. In 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition [2009-0023]

Scalar spatial correlations in a supersonic mixing flowfield. / Takahashi, Hidemi; Oso, Hiroki; Kouchi, Toshinori; Masuya, Goro; Hirota, Mitsutomo.

47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. 2009. 2009-0023.

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

Takahashi, H, Oso, H, Kouchi, T, Masuya, G & Hirota, M 2009, Scalar spatial correlations in a supersonic mixing flowfield. in 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition., 2009-0023, 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, Orlando, FL, United States, 1/5/09.
Takahashi H, Oso H, Kouchi T, Masuya G, Hirota M. Scalar spatial correlations in a supersonic mixing flowfield. In 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. 2009. 2009-0023
Takahashi, Hidemi ; Oso, Hiroki ; Kouchi, Toshinori ; Masuya, Goro ; Hirota, Mitsutomo. / Scalar spatial correlations in a supersonic mixing flowfield. 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. 2009.
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