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3D Distribution of Significant Oscillations in Thermal Plasma Jet
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SYSNO ASEP 0346985 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title 3D Distribution of Significant Oscillations in Thermal Plasma Jet Author(s) Gruber, Jan (UT-L) RID, ORCID
Sekerešová, Zuzana (UT-L)
Hlína, Jan (UT-L) RID
Šonský, Jiří (UT-L) RIDSource Title Gas Discharges and Their Applications. - Greifswald : Leibniz Institute, 2010 - ISBN 0-9539105-4-7 Pages s. 548-551 Number of pages 4 s. Action International Conference on Gas Discharges and their Applications /18./ Event date 05.09.2010-10.09.2010 VEvent location Greifswald Country DE - Germany Event type EUR Language eng - English Country DE - Germany Keywords plasma torch ; thermal plasma ; PSD Subject RIV BL - Plasma and Gas Discharge Physics CEZ AV0Z20570509 - UE-C, UT-L (2005-2011) Annotation The aim of this work was to evaluate instabilities in a plasma jet using image analysis. We have analyzed thermal plasma jet generated by the plasma torch device. Reflecting mirrors were used to observe the jet by a hi-speed CCD camera from three directions separated by 120°. We have used those three simultaneous views to calculate 3D reconstruction of the plasma flow radiation in the jet by the method based on inverse Radon transform. Significant oscillations were identified by Fourier transform analyzing optical radiation in different areas of the jet. The oscillations differ by their origin (electric or hydrodynamic), spatial position and interact in a complex way. In this paper we describe three-dimensional distribution of these oscillations under various experimental conditions (different ratio of input axial and tangential gas flow rate). Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
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