Evolution of instability in plasma jet boundary
Result description
The experimental investigation of oscillations arising in boundary layer of plasma jet was performed by the registration of the light radiation from the plasma jet. The linear array of eight photodiodes was used. Photodiodes array was positioned both parallel and perpendicular to the axis of the plasma jet. The evolution of oscillations was characterized by dependences of the following characteristics on axial coordinate: spectra in various radial positions, radial profiles of basic frequency amplitude,ratios of the second or the third harmonics amplitude to basic frequency amplitude and phase velocities of basic frequency and its harmonics. Dependences of these quantities on plasma jet parameters were studied. Development of spatial structure of thejet boundary oscillations is shown.
Keywords
plasma jetboundary layer instabilityevolution of instability
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Evolution of instability in plasma jet boundary
Original language description
The experimental investigation of oscillations arising in boundary layer of plasma jet was performed by the registration of the light radiation from the plasma jet. The linear array of eight photodiodes was used. Photodiodes array was positioned both parallel and perpendicular to the axis of the plasma jet. The evolution of oscillations was characterized by dependences of the following characteristics on axial coordinate: spectra in various radial positions, radial profiles of basic frequency amplitude,ratios of the second or the third harmonics amplitude to basic frequency amplitude and phase velocities of basic frequency and its harmonics. Dependences of these quantities on plasma jet parameters were studied. Development of spatial structure of thejet boundary oscillations is shown.
Czech name
Vývoj nestability na hranici proudu plazmatu
Czech description
Experimentální studium oscilací vznikajících v hraniční vrstvě proudu plazmatu bylo prováděno záznamem světla z plazmatu. Byla použita řádka fotodiod umístěných paralelně nebo kolmo k ose proudu plazmatu. Vývoj nestability byl charakterizován závislostínásledujících charakteristik na axiální koordinátě: spektra v různých radiálních pozicích, radiálního profilu amplitudy základní frekvence, poměru amplitudy druhé resp. Třetí harmonické k amplitudě základní frekvence a fázové rychlosti základní frekvencea jejich harmonických. Je vyobrazena prostorová struktura oscilací na různých axiálních vzdálenostech.
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
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Result continuities
Project
GA202/05/0669: Expanding supersonic plasma jet generated in dc water-stabilized arcs
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2006
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Czechoslovak Journal of Physics
ISSN
0011-4626
e-ISSN
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Volume of the periodical
56
Issue of the periodical within the volume
Suppl.B
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
6
Pages from-to
848-853
UT code for WoS article
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EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BL - Plasma physics and discharge through gases
Year of implementation
2006