OH Planar Laser-Induced Fluorescence Velocity Measurements in a Supersonic Combustor

AIAA Journal ◽  
10.2514/2.157 ◽  
1997 ◽  
Vol 35 (4) ◽  
pp. 678-686 ◽  
Author(s):  
G. Gauba ◽  
K. G. Klavuhn ◽  
J. C. McDaniel ◽  
K. G. Victor ◽  
R. H. Krauss ◽  
...  
Keyword(s):  
Laser Induced Fluorescence ◽  
Velocity Measurements ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser

OH planar laser-induced fluorescence velocity measurements in a supersonic combustor

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 678-686
Author(s):  
G. Gauba ◽  
K. G. Klavuhn ◽  
J. C. McDaniel ◽  
K. G. Victor ◽  
R. H. Krauss ◽  
...  
Keyword(s):  
Laser Induced Fluorescence ◽  
Velocity Measurements ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser

scholarly journals Planar Laser-Induced Fluorescence Velocity Measurements of Retropropulsion Jets in a Mach 12 Freestream

2013 ◽  
Author(s):  
Joshua R. Codoni ◽  
Erin M. Reed ◽  
James McDaniel ◽  
Hicham Alkandry ◽  
Iain D. Boyd
Keyword(s):  
Laser Induced Fluorescence ◽  
Velocity Measurements ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser

Observations of Flame Behavior in a Laboratory-Scale Premixed Natural Gas/Air Gas Turbine Combustor From Planar Laser Induced Fluorescence Measurements of OH, Laser Doppler Anemometer Velocity Measurements, and Coherent Anti-Stokes Roman Spectrometer Temperature Measurements

2004 ◽  
Vol 127 (4) ◽  
pp. 724-739 ◽  
Author(s):  
Paul O. Hedman ◽  
Thomas H. Fletcher ◽  
Daniel V. Flores ◽  
Stewart G. Graham ◽  
Jason K. Haslam ◽  
...  
Keyword(s):  
Natural Gas ◽  
Laser Induced Fluorescence ◽  
Laser Doppler Anemometer ◽  
Laboratory Scale ◽  
Laser Doppler ◽  
Temperature Measurements ◽  
Velocity Measurements ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser ◽  
Anti Stokes

Instantaneous planar laser induced fluorescence (PLIF) images of OH, simultaneous axial/radial and axial/tangential velocity measurements with an LDA (laser Doppler anemometer), and instantaneous gas temperature measurements using a coherent anti-Stokes Raman spectrometer (CARS) were obtained in a pre-mixed, swirl-stabilized laboratory-scale combustor, fired with natural gas. Four operating conditions were examined (two swirl conditions and equivalence ratios of 0.80 and 0.65). The instantaneous PLIF images of OH illustrate the chaotic nature of the turbulent flame eddies. Mean and standard deviations of each variable were measured at different locations in the flame, along with probability density functions. Stability of the flame at each condition is related to measurements in the central and side recirculation zones.

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

scholarly journals The 3D Modeling System for Bioaerosol Distribution Based on Planar Laser-Induced Fluorescence

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2607
Author(s):  
Siying Chen ◽  
Yuanyuan Chen ◽  
Yinchao Zhang ◽  
Pan Guo ◽  
He Chen ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
3D Modeling ◽  
Aerosol Particles ◽  
Laser Induced Fluorescence ◽  
Frame Rate ◽  
Oxide Semiconductor ◽  
Laser Source ◽  
Confined Space ◽  
Planar Laser Induced Fluorescence ◽  
Planar Laser

Although it is quite challenging to image and analyze the spatial distribution of bioaerosols in a confined space, a three-dimensional (3D) modeling system based on the planar laser-induced fluorescence (PLIF) technique is proposed in this paper, which is designed to analyze the temporal and spatial variations of bioaerosol particles in a confined chamber. The system employs a continuous planar laser source to excite the fluoresce, and a scientific complementary metal oxide semiconductor (sCMOS) camera to capture images of 2048 × 2048 pixels at a frame rate of 12 Hz. While a sliding platform is moving back and forth on the track, a set of images are captured at different positions for 3D reconstruction. In this system, the 3D reconstruction is limited to a maximum measurement volume of about 50 cm × 29.7 cm × 42 cm, with a spatial resolution of about 0.58 mm × 0.82 mm × 8.33 mm, and a temporal resolution of 5 s. Experiments were carried out to detect the PLIF signals from fluorescein aerosols in the chamber, and then 3D reconstruction was used to visualize and analyze the diffusion of aerosol particles. The results prove that the system can be applied to clearly reconstruct the 3D distribution and record the diffusion process of aerosol particles in a confined space.

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