Measurement of Anode Arc Attachment Movement in DC Arc Plasma Torch at Atmospheric Pressure

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10377895" target="_blank" >RIV/00216208:11320/18:10377895 - isvavai.cz</a>

Alternative codes found

RIV/61389021:_____/18:00489830

Result on the web

<a href="https://doi.org/10.1007/s11090-018-9888-0" target="_blank" >https://doi.org/10.1007/s11090-018-9888-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11090-018-9888-0" target="_blank" >10.1007/s11090-018-9888-0</a>

Result language

angličtina

Original language name

Measurement of Anode Arc Attachment Movement in DC Arc Plasma Torch at Atmospheric Pressure

Original language description

Direct current (DC) arc plasma torches are widely used in various industrial applications. Studying processes in their anode area helps to extend their lifetime, and stabilize the plasma flow for plasma applications. This paper reports detailed observations of the fast movement (above 100 m/s) of the anode arc attachment in a hybrid water-argon DC arc plasma torch with an external anode. We measured a mean electrical conductivity of a plasma volume above the anode and found a relation between the attachment movement and the anode erosion. Further, we measured average attachment speed, the average period of the restrike process and the average distances travelled by the attachment under different experimental conditions such as different values of the arc electric current, argon flow rate and different anode configurations. For our measurements, we used a high-speed camera and a high-voltage probe. Our results are in agreement with a model of plasma generated by a hybrid plasma torch and with spectroscopy measurements. The results describe the movement of the anode arc attachment in detail and provide experimental data on average plasma electrical conductivity in hot anode areas. Both the measurements of the mean electrical conductivity and the procedure for quantitative comparisons of anode erosion can be used also in water plasma torches and theoretically also in gas plasma torches.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

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

Name of the periodical

Plasma Chemistry and Plasma Processing

ISSN

0272-4324

e-ISSN

—

Volume of the periodical

38

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

18

Pages from-to

637-654

UT code for WoS article

000429484500011

EID of the result in the Scopus database

2-s2.0-85044398768