Single camera time-resolved 3D tomographic reconstruction of a pulsed gas jet

Experimental characterization of micro-jets is challenging because of the small dimensions of the micro-nozzle. In this study, we propose a new technique to visualize the instantaneous 3D structure of a pulsed gas micro-jet. Using phase-averaging of Schlieren visualizations obtained with a high-spee...

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Bibliographic Details
Published in:Journal of visualization 2013-11, Vol.16 (4), p.263-274
Main Authors: Cabaleiro, J. M., Aider, J. L., Artana, G., Wesfreid, J. E.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Computer Imaging
Engineering
Engineering Fluid Dynamics
Engineering Thermodynamics
Heat and Mass Transfer
Pattern Recognition and Graphics
Regular Paper
Vision
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Summary:Experimental characterization of micro-jets is challenging because of the small dimensions of the micro-nozzle. In this study, we propose a new technique to visualize the instantaneous 3D structure of a pulsed gas micro-jet. Using phase-averaging of Schlieren visualizations obtained with a high-speed camera and 3D reconstruction through a filtered back projection algorithm, it is possible to follow the high-speed dynamics of the pulsed jet. The experimental technique is illustrated by a 3D reconstruction of a pulsed helium micro-jet. The technique is simple yet very useful. To our knowledge, it is the only experimental method to analyze the instantaneous 3D structure and high frequency dynamics of pulsed micro-jets. Graphical Abstract
ISSN:1343-8875
1875-8975
DOI:10.1007/s12650-013-0176-z