Comparison of Performance between Hybrid and Water Vortex Stabilized Electric Arcs

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Comparison of Performance between Hybrid and Water Vortex Stabilized Electric Arcs

Original language description

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

Czech name

Porovnání výkonu elektického oblouku s hybridní a vodní stabilizací

Czech description

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

Type

D - Article in proceedings

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

<a href="/en/project/GA202%2F02%2F1027" target="_blank" >GA202/02/1027: The study of processes influencing radial transport of energy in a liquid-stabilized electric arc</a><br>

Continuities

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

Publication year

2004

Confidentiality

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

Article name in the collection

New Trends in Physics (NTF 2004)

ISBN

80-7355-024-5

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

178-181

Publisher name

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

Place of publication

Brno

Event location

Brno

Event date

Nov 11, 2004

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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