About: Resonant Excitation of Boundary Layer Instability of DC Arc Plasma Jet by Current Modulation

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Instabilities of thermal plasma jets were studied on the basis of analysis of plasma radiation fluctuations recorded by an array of high frequency photodiodes. Characteristic frequencies of jet oscillations were found and spatial distribution of amplitude of plasma fluctuations was determined. The influence of arc current ripple on plasma instabilities was investigated for two types of power supply - classical thyristor controlled unit with the frequency of the current ripple 300 Hz and the rectifier with the high frequency converter and frequency of the current modulation 30 kHz. Generation of boundary layer instability with the current modulation frequency and its harmonics was proved using fast Fourier transform, contour plots and phase portraits. It was found that the character of fluctuations of plasma jet was substantially influenced by current ripple with the frequency or its harmonics close to the frequency of oscillations generated by boundary layer instability. Instabilities of thermal plasma jets were studied on the basis of analysis of plasma radiation fluctuations recorded by an array of high frequency photodiodes. Characteristic frequencies of jet oscillations were found and spatial distribution of amplitude of plasma fluctuations was determined. The influence of arc current ripple on plasma instabilities was investigated for two types of power supply - classical thyristor controlled unit with the frequency of the current ripple 300 Hz and the rectifier with the high frequency converter and frequency of the current modulation 30 kHz. Generation of boundary layer instability with the current modulation frequency and its harmonics was proved using fast Fourier transform, contour plots and phase portraits. It was found that the character of fluctuations of plasma jet was substantially influenced by current ripple with the frequency or its harmonics close to the frequency of oscillations generated by boundary layer instability. (en)
Title	Resonant Excitation of Boundary Layer Instability of DC Arc Plasma Jet by Current Modulation Resonant Excitation of Boundary Layer Instability of DC Arc Plasma Jet by Current Modulation (en)
skos:prefLabel	Resonant Excitation of Boundary Layer Instability of DC Arc Plasma Jet by Current Modulation Resonant Excitation of Boundary Layer Instability of DC Arc Plasma Jet by Current Modulation (en)
skos:notation	RIV/61389021:_____/11:00367145!RIV12-AV0-61389021
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GAP205/11/2070), Z(AV0Z20430508)
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Hrabovský, Milan Kopecký, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky plazmatu AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	226754
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/11:00367145
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	dc arc jet; plasma jet oscillations; boundary layer instability; frequency spectra (en)
http://linked.open.../riv/klicoveSlovo	boundary layer instability dc arc jet plasma jet oscillations frequency spectra
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[79417ED40451]
http://linked.open...i/riv/nazevZdroje	Plasma Chemistry and Plasma Processing
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Interaction of steam plasma jet with solids, liquids and gases in low pressure and gasification reactors
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	31
http://linked.open...iv/tvurceVysledku	Hrabovský, Milan Kopecký, Vladimír
http://linked.open...ain/vavai/riv/wos	000300101200003
http://linked.open...n/vavai/riv/zamer	Physical and chemical processes in plasmas and theis applications
issn	0272-4324
number of pages	12 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s11090-011-9317-0

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