Acetone PLIF imaging of a supersonic axisymmetric base flow with mass bleed

Joel P. Kuehner, J. Craig Dutton

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

Abstract

Acetone planar laser-induced fluorescence (PLIF) was used to study the supersonic flow over an axisymmetric base with mass bleed. Detailed side-view and global end-view images were obtained in the recirculation regions, shear layer, and trailing wake. For the three bleed rates studied, the instantaneous behavior of the flowfield deviated substantially from the expected mean flow, especially for bleed rates below the optimal case. Large pockets of unmixed bleed fluid dominated the flowfield for the low and intermediate bleed rates, even in the trailing wake, highlighting the unsteady nature of the flowfield. The power-on condition for the high bleed rate case was the most temporally stable flowfield, due to the high-momentum of the bleed jet. A multi-plateau stirring effect was prevalent for all cases, consistent with previous compressible shear layer findings, and the effect increased with bleed rate and distance downstream. Probability density functions (pdfs) of PLIF intensity indicated a similar mixingc haracter between the low and intermediate bleed rates in the near wake and for all bleed rate cases in the trailingw ake. The multi-plateau stirringeffec t and unmixed bleed fluid pockets were represented well in the mixingp dfs.

Original languageEnglish (US)
Title of host publication34th AIAA Fluid Dynamics Conference and Exhibit
StatePublished - Dec 1 2004
Event34th AIAA Fluid Dynamics Conference and Exhibit 2004 - Portland, OR, United States
Duration: Jun 28 2004Jul 1 2004

Publication series

Name34th AIAA Fluid Dynamics Conference and Exhibit

Other

Other34th AIAA Fluid Dynamics Conference and Exhibit 2004
CountryUnited States
CityPortland, OR
Period6/28/047/1/04

Fingerprint

Acetone
Fluorescence
Imaging techniques
Lasers
Fluids
Supersonic flow
Probability density function
Momentum

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Aerospace Engineering

Cite this

Kuehner, J. P., & Craig Dutton, J. (2004). Acetone PLIF imaging of a supersonic axisymmetric base flow with mass bleed. In 34th AIAA Fluid Dynamics Conference and Exhibit (34th AIAA Fluid Dynamics Conference and Exhibit).

Acetone PLIF imaging of a supersonic axisymmetric base flow with mass bleed. / Kuehner, Joel P.; Craig Dutton, J.

34th AIAA Fluid Dynamics Conference and Exhibit. 2004. (34th AIAA Fluid Dynamics Conference and Exhibit).

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

Kuehner, JP & Craig Dutton, J 2004, Acetone PLIF imaging of a supersonic axisymmetric base flow with mass bleed. in 34th AIAA Fluid Dynamics Conference and Exhibit. 34th AIAA Fluid Dynamics Conference and Exhibit, 34th AIAA Fluid Dynamics Conference and Exhibit 2004, Portland, OR, United States, 6/28/04.
Kuehner JP, Craig Dutton J. Acetone PLIF imaging of a supersonic axisymmetric base flow with mass bleed. In 34th AIAA Fluid Dynamics Conference and Exhibit. 2004. (34th AIAA Fluid Dynamics Conference and Exhibit).
Kuehner, Joel P. ; Craig Dutton, J. / Acetone PLIF imaging of a supersonic axisymmetric base flow with mass bleed. 34th AIAA Fluid Dynamics Conference and Exhibit. 2004. (34th AIAA Fluid Dynamics Conference and Exhibit).
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