Digital Fluorescence Imaging of Gaseous Flows

1988 ◽  
Vol 117 ◽  
Author(s):  
Ronald K. Hanson ◽  
Phillip H. Paul ◽  
Jerry M. Seitzman
Keyword(s):  
Supersonic Jet ◽  
Laser Induced Fluorescence ◽  
Current Status ◽  
Jet Mixing ◽  
Ccd Array ◽  
Imaging Results ◽  
Planar Laser ◽  
Gaseous Flows ◽  
Digital Fluorescence Imaging ◽  
Array Camera

AbstractThe current status of planar laser-induced fluorescence (PLIF) imaging is reviewed, and example imaging results obtained in subsonic and supersonic jet-mixing flows with a new intensified high-resolution CCD-array camera are presented.

Numerical Simulations and Planar Laser-Induced Fluorescence Imaging Results of Hypersonic Reactive Flows

2000 ◽  
Vol 16 (1) ◽  
pp. 16-21 ◽  
Author(s):  
Kazu Toshimitsu ◽  
Akiko Matsuo ◽  
Michel R. Kamel ◽  
Christopher I. Morris ◽  
Ronald K. Hanson
Keyword(s):  
Numerical Simulations ◽  
Fluorescence Imaging ◽  
Laser Induced Fluorescence ◽  
Reactive Flows ◽  
Planar Laser Induced Fluorescence ◽  
Imaging Results ◽  
Planar Laser

Planar Laser-Induced Fluorescence Experiments and Modeling Study of Jets in Crossflow

2016 ◽  
Vol 138 (8) ◽  
Author(s):  
Luke Thompson ◽  
Greg Natsui ◽  
Carlos Velez ◽  
Jayanta Kapat ◽  
Subith S. Vasu
Keyword(s):  
Fluid Dynamic ◽  
Velocity Ratio ◽  
Scalar Fields ◽  
Laser Induced Fluorescence ◽  
Freestream Velocity ◽  
Jet Mixing ◽  
Jet In Crossflow ◽  
Planar Laser Induced Fluorescence ◽  
Jet Trajectory ◽  
Planar Laser

Planar laser-induced fluorescence (PLIF) with acetone seeding was applied to measure the scalar fields of an axisymmetric freejet and an inclined jet in crossflow as applicable to film cooling. From the scalar fields, jet-mixing and trajectory characteristics were obtained. In order to validate the technique, the canonical example of a nonreacting freejet of Reynolds numbers 900–9000 was investigated. Desired structural characteristics were observed and showed strong agreement with computational modeling. After validating the technique with the axisymmetric jet, the jet in crossflow was tested with various velocity ratios and jet injection angles. Results indicated the degree of wall separation for different injection angles and demonstrated both the time-averaged trajectories as well as select near-wall concentration results for varying jet momentum fluxes. Consistent with literature findings, the orthogonal jet trajectory for varying blowing ratios collapsed when scaled by the jet-to-freestream velocity ratio and hole diameter, rd. Similar collapsing was demonstrated in the cases of a nonorthogonal jets. Computational fluid dynamic (CFD) simulations using the openfoam software were used to compare predictions with select experimental cases and yielded reasonable agreement. Insight into the importance and structure of the counter-rotating vortex pair (CVP) and general flow field turbulence was highlighted by cross validation between CFD and experimental results.

Quantification of mixing of oxygen and iodine in Chemical Oxygen Iodine Lasers using planar laser induced fluorescence

2000 ◽  
Author(s):  
T. Muruganandam ◽  
Srihari Lakshmi ◽  
A. Ramesh ◽  
S. Viswamurthy ◽  
R. Sujith ◽  
...  
Keyword(s):  
Laser Induced Fluorescence ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser
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