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 language | English |
|---|---|
| Title of host publication | 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition |
| Publication status | Published - 2009 |
| Externally published | Yes |
| Event | 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States Duration: Jan 5 2009 → Jan 8 2009 |
Other
| Other | 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition |
|---|---|
| Country | United States |
| City | Orlando, FL |
| Period | 1/5/09 → 1/8/09 |
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ASJC Scopus subject areas
- Space and Planetary Science
- Aerospace Engineering
Cite this
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 proceeding › Conference contribution
}
TY - GEN
T1 - Scalar spatial correlations in a supersonic mixing flowfield
AU - Takahashi, Hidemi
AU - Oso, Hiroki
AU - Kouchi, Toshinori
AU - Masuya, Goro
AU - Hirota, Mitsutomo
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=78549233690&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78549233690&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:78549233690
SN - 9781563479694
BT - 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
ER -