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Proceedings Paper

Quantitative Schlieren method using digital image processing for supersonic flow characterization
Author(s): Ionel Valentin Vlad; Nicholas Ionescu-Pallas; Ion G. Apostol
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Paper Abstract

New analytic formulas relating the light intensity distribution from the output plane of the schlieren system to the refractive index gradients of the air flow around a model are reported. The digital processing of the schlieren image using this new algorithm and a proper calibration led to precise measurements of the refractive index (and, hence, mass density) distribution, in the error limits of 5%.

Paper Details

Date Published: 12 January 1993
PDF: 9 pages
Proc. SPIE 1771, Applications of Digital Image Processing XV, (12 January 1993); doi: 10.1117/12.139114
Show Author Affiliations
Ionel Valentin Vlad, Institute of Atomic Physics (Romania)
Nicholas Ionescu-Pallas, Institute of Atomic Physics (Romania)
Ion G. Apostol, Institute of Atomic Physics (Romania)

Published in SPIE Proceedings Vol. 1771:
Applications of Digital Image Processing XV
Andrew G. Tescher, Editor(s)

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