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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN 印刷: 1093-3611
ISSN オンライン: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v12.i3-4.40
pages 337-344

WAVELET ANALYSIS OF INSTABILITIES IN A THERMAL PLASMA JET

J. Gruber
Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Dolejskova 5, 182 00 Praha 8, Czech Republic
J. Hlina
Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Dolejskova 5, 182 00 Praha 8, Czech Republic
J. Sonsky
Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Dolejskova 5, 182 00 Praha 8, Czech Republic

要約

Hydrodynamic processes are mostly responsible for unstable behaviour of thermal plasma jets. Wavelet analysis of CCD camera records of plasma jet radiation can afford valuable results showing the temporal changes of spatial distribution of plasma jet oscillations. The paper presents the basics of the wavelet analysis and some results and conclusions showing possibilities of its applications to the CCD records of plasma jets especially regarding to the selection of a proper wavelet type.


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