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Statements

Subject Item
n2:RIV%2F61389021%3A_____%2F11%3A00366111%21RIV12-AV0-61389021
rdf:type
n8:Vysledek skos:Concept
dcterms:description
Optical emission spectroscopy has been used to investigate the characteristics of a plasma jet produced by a steam arc cutting torch operated in air at atmospheric pressure. A procedure has been developed for simultaneous determination of temperature and pressure in the plasma jet as well as an effective nonequilibrium factor. It is based on comparison of a few experimental and simulated spectral quantities. The experimental data were obtained from the spectrum of Hβ and OII lines centred at 480 nm. The existence of the shock wave structure characteristic of an underexpanded jet can clearly be deduced from the measured properties. In the first expansion region, the centreline pressure drops from about 1.4 atm at the nozzle exit to about 0.7 atm a few tenths of millimeter downstream. On the contrary, the centreline temperature remains almost unchanged within this region and reaches the value of about 23 000 K Optical emission spectroscopy has been used to investigate the characteristics of a plasma jet produced by a steam arc cutting torch operated in air at atmospheric pressure. A procedure has been developed for simultaneous determination of temperature and pressure in the plasma jet as well as an effective nonequilibrium factor. It is based on comparison of a few experimental and simulated spectral quantities. The experimental data were obtained from the spectrum of Hβ and OII lines centred at 480 nm. The existence of the shock wave structure characteristic of an underexpanded jet can clearly be deduced from the measured properties. In the first expansion region, the centreline pressure drops from about 1.4 atm at the nozzle exit to about 0.7 atm a few tenths of millimeter downstream. On the contrary, the centreline temperature remains almost unchanged within this region and reaches the value of about 23 000 K
dcterms:title
Spectroscopic Characterization of a Steam Arc Cutting Torch Spectroscopic Characterization of a Steam Arc Cutting Torch
skos:prefLabel
Spectroscopic Characterization of a Steam Arc Cutting Torch Spectroscopic Characterization of a Steam Arc Cutting Torch
skos:notation
RIV/61389021:_____/11:00366111!RIV12-AV0-61389021
n8:predkladatel
n9:ico%3A61389021
n3:aktivita
n7:Z n7:P
n3:aktivity
P(GAP205/11/2070), Z(AV0Z20430508)
n3:cisloPeriodika
5
n3:dodaniDat
n4:2012
n3:domaciTvurceVysledku
n12:5285003 n12:1743163 n12:4668162 n12:3821056
n3:druhVysledku
n17:J
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n20:predkladatel
n3:idSjednocenehoVysledku
231385
n3:idVysledku
RIV/61389021:_____/11:00366111
n3:jazykVysledku
n14:eng
n3:klicovaSlova
Plasma cutting; Optical emission spectroscopy; Steam arc; Supersonic plasma jet
n3:klicoveSlovo
n6:Steam%20arc n6:Plasma%20cutting n6:Supersonic%20plasma%20jet n6:Optical%20emission%20spectroscopy
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[7C32BE641A94]
n3:nazevZdroje
Plasma Chemistry and Plasma Processing
n3:obor
n18:BL
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
7
n3:projekt
n5:GAP205%2F11%2F2070
n3:rokUplatneniVysledku
n4:2011
n3:svazekPeriodika
31
n3:tvurceVysledku
Sember, Viktor Heinrich, M. Mašláni, Alan Hrabovský, Milan Křenek, Petr Pauser, H. Nimmervoll, R.
n3:wos
000300100900010
n3:zamer
n11:AV0Z20430508
s:issn
0272-4324
s:numberOfPages
16
n16:doi
10.1007/s11090-011-9312-5