Porovnání výkonu elektického oblouku s hybridní a vodní stabilizací

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F04%3APU44591" target="_blank" >RIV/00216305:26220/04:PU44591 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of Performance between Hybrid and Water Vortex Stabilized Electric Arcs

Popis výsledku v původním jazyce

The present paper deals with numerical modelling of electric arc stabilized by water vortex. Two-dimensional axisymmetric model includes the arc discharge area between the cathode and the outlet nozzle of the water plasma torch. Thermal, electrical and fluid-dynamic characteristics as well as power losses of such arc has been studied for the range of currents 150-600 A and three different radiation models (net emission coefficient, net emission approach with reabsorption, partial characteristics). It waas proved that the amount of energy losses transferred radially from the arc by conduction and radiation range between 70 and 35 % of the input power. Temperature and velocity fields within the discharge are close to each other for the partial characteristics model and for the net emission model with zero reabsorption of radiation. Calculations carried out by the partial characteristics method showed that reabsorption of radiation in arc fringes reaches about 26 % for the studied range o

Název v anglickém jazyce

Comparison of Performance between Hybrid and Water Vortex Stabilized Electric Arcs

Popis výsledku anglicky

The present paper deals with numerical modelling of electric arc stabilized by water vortex. Two-dimensional axisymmetric model includes the arc discharge area between the cathode and the outlet nozzle of the water plasma torch. Thermal, electrical and fluid-dynamic characteristics as well as power losses of such arc has been studied for the range of currents 150-600 A and three different radiation models (net emission coefficient, net emission approach with reabsorption, partial characteristics). It waas proved that the amount of energy losses transferred radially from the arc by conduction and radiation range between 70 and 35 % of the input power. Temperature and velocity fields within the discharge are close to each other for the partial characteristics model and for the net emission model with zero reabsorption of radiation. Calculations carried out by the partial characteristics method showed that reabsorption of radiation in arc fringes reaches about 26 % for the studied range o

Druh

D - Stať ve sborníku

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

<a href="/cs/project/GA202%2F02%2F1027" target="_blank" >GA202/02/1027: Studium procesů ovlivňujících radiální transport energie v obloukovém výboji s kapalinovou stabilizací</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

New Trends in Physics (NTF 2004)

ISBN

80-7355-024-5

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

178-181

Název nakladatele

Ing. Zdeněk Novotný, CSc., Ondráčkova 105, Brno

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

11. 11. 2004

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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