About: Enthalpy Probe Study of the Expanding Thermal Plasma Jet

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Effect of reduction of ambient pressure on properties of thermal plasma jet was studied for pressure range of 100 kPa - 4 kPa. Plasma jet was generated by the DC torch with water-argon stabilization. Properties of the plasma jet were measured by enthalpy probe TEKNA connected to mass spectrometer. Temperature and velocity fields within the jet were evaluated from the measured values. Variations of the chamber pressure between atmospheric and 20 kPa resulted in little changes of plasma jet parameters. Reduction of the pressure below 20 kPa led to drastic velocity rise due to transition of the plasma flow from subsonic to supersonic. CCD camera images show the under-expanded character of the flow with hot exiting plume followed by the expansion. Dependences of the plasma jet characteristics on pressure, arc current and flow rate of plasma forming gas were studied. Effect of reduction of ambient pressure on properties of thermal plasma jet was studied for pressure range of 100 kPa - 4 kPa. Plasma jet was generated by the DC torch with water-argon stabilization. Properties of the plasma jet were measured by enthalpy probe TEKNA connected to mass spectrometer. Temperature and velocity fields within the jet were evaluated from the measured values. Variations of the chamber pressure between atmospheric and 20 kPa resulted in little changes of plasma jet parameters. Reduction of the pressure below 20 kPa led to drastic velocity rise due to transition of the plasma flow from subsonic to supersonic. CCD camera images show the under-expanded character of the flow with hot exiting plume followed by the expansion. Dependences of the plasma jet characteristics on pressure, arc current and flow rate of plasma forming gas were studied. (en) Efekt redukce okolního tlaku na vlastnosti proudícího plazmatu byl zkoumán v rozsahu tlaků 100 – 4 kPa. Plazmat byl generován pomocí hybridního plazmatronu s plynovo-vodní stabilizaci oblouku. Vlastnosti generovaného plazmatu byly měřeny pomocí entalpické sondy Tekna spojené s hmotovým spektrometrem. Naměřené hodnoty se používaly pro vyhodnocení teplotních a rychlostních polí proudění. Snížení tlaku od atmosferického ke 20 kPa vedlo jen k mírným změnam parametrů proudění. Další snížení tlaku pod 20 kPa vedlo k drastickému nárůstu rychlosti kvůli přechodu proudění z podzvukového do nadzvukového. Obrazky z CCD kamery ukazujou „under-expanded“ charakter proudění. Byly zkoumány závislosti vlastnosti proudění na tlaku, proudu oblouku a průtoku plynu formujícího plazmat. (cs)
Title	Enthalpy Probe Study of the Expanding Thermal Plasma Jet Enthalpy Probe Study of the Expanding Thermal Plasma Jet (en) Studium expandujícího plazmového jetu entalpickou sondou (cs)
skos:prefLabel	Enthalpy Probe Study of the Expanding Thermal Plasma Jet Enthalpy Probe Study of the Expanding Thermal Plasma Jet (en) Studium expandujícího plazmového jetu entalpickou sondou (cs)
skos:notation	RIV/61389021:_____/05:00030923!RIV06-GA0-61389021
http://linked.open.../vavai/riv/strany	45;54
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA202/05/0669)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Hrabovský, Milan Kopecký, Vladimír Gregor, Jan Chumak, Oleksiy Kavka, Tetyana
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	520340
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/05:00030923
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Supersonic plasma jet; enthalpy probe (en)
http://linked.open.../riv/klicoveSlovo	Supersonic plasma jet enthalpy probe
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[BC2EAB99128A]
http://linked.open...i/riv/nazevZdroje	High Temperature Materials and Processes
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Expanding supersonic plasma jet generated in dc water-stabilized arcs
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	9
http://linked.open...iv/tvurceVysledku	Chumak, Oleksiy Hrabovský, Milan Kavka, Tetyana Kopecký, Vladimír Gregor, Jan
issn	1093-3611
number of pages	10 (xsd:int)

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