Beam Deflection Tomography-Application to Density Measurements in Two Interacting Parallel Free-Jets

Beam Deflection Tomography-Application to Density Measurements in Two Interacting Parallel Free-Jets

Beam-deflection optical tomography is used to reconstruct 2-D density maps in non axisymmetrical media. The images are reconstructed by the convolution backprojection algorithm with M*N deflections measured at M angles and N positions per angle. The reconstruction procedure and the limits of the met...

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Bibliographische Detailangaben
Hauptverfasser: Cohat, M, Perrin, M. -Y, Martin, J. -P, Dettleff, G, Doering, S
Format: Report
Sprache:eng
Schlagworte:
DEFLECTION
FLOW FIELDS
FLOW VISUALIZATION
Fluid Mechanics
FLUX DENSITY
FOURIER TRANSFORMATION
FRANCE
GERMANY
HIGH RESOLUTION
IMAGE PROCESSING
JET FLOW
LASER BEAMS
Lasers and Masers
Optical Detection and Detectors
OPTICAL IMAGES
SPATIAL DISTRIBUTION
SUPERSONIC FLOW
TOMOGRAPHY
TWO DIMENSIONAL
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Beschreibung
Zusammenfassung:Beam-deflection optical tomography is used to reconstruct 2-D density maps in non axisymmetrical media. The images are reconstructed by the convolution backprojection algorithm with M*N deflections measured at M angles and N positions per angle. The reconstruction procedure and the limits of the method are discussed. This technique has been applied to the investigation of the interacting flow between two parallel supersonic free-jets of air or nitrogen. (Author)