Abstract
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.
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Acknowledgments
This research has been performed with the support of the Bernardo Houssay Program (Ministerio de Ciencia, Tecnología e Innovación Productiva-CONICET, Republica Argentina; Ministère de l’enseignement supérieur et de la recherche, République Française; Ministère des affaires étrangères et européennes) and of the LIA PMF-FMF (French-Argentinian International Associated Laboratory in Physics and Fluid Mechanics) and of the French Agence pour le Développement Et la Maîtrise de l’Energie (ADEME) through the project CARAVAJE.
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Cabaleiro, J.M., Aider, J.L., Artana, G. et al. Single camera time-resolved 3D tomographic reconstruction of a pulsed gas jet. J Vis 16, 263–274 (2013). https://doi.org/10.1007/s12650-013-0176-z
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DOI: https://doi.org/10.1007/s12650-013-0176-z