Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Печать: 1093-3611
ISSN Онлайн: 1940-4360

Выпуски:
Том 24, 2020 Том 23, 2019 Том 22, 2018 Том 21, 2017 Том 20, 2016 Том 19, 2015 Том 18, 2014 Том 17, 2013 Том 16, 2012 Том 15, 2011 Том 14, 2010 Том 13, 2009 Том 12, 2008 Том 11, 2007 Том 10, 2006 Том 9, 2005 Том 8, 2004 Том 7, 2003 Том 6, 2002 Том 5, 2001 Том 4, 2000 Том 3, 1999 Том 2, 1998 Том 1, 1997

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v9.i1.50
pages 45-53

ENTHALPY PROBE STUDY OF THE EXPANDING THERMAL PLASMA JET

J. Gregor
Faculty of Electrical Engineering and Communication, Brno University of Technology, Purkynova 118, 61200 Brno, Czech Republic
O. Chumak
Thermal Plasma Department, Institute of Plasma Physics AS CR, Za Slovankou 3, 18200, Praha 8, Czech Republic
Vladimir Kopecky
Thermal Plasma Department, Institute of Plasma Physics AS CR, Za Slovankou 3, 18200, Praha 8, Czech Republic
Milan Hrabovsky
Institute of Plasma Physics, Academy of Sciences Za Slovankou 3, 182 00, Prague

Краткое описание

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.


Articles with similar content:

PROPERTIES OF PLASMA JET GENERATED IN HYBRID GAS/WATER TORCH UNDER REDUCED PRESSURES
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.8, 2004, issue 4
T. Kavka, Milan Hrabovsky, M. Konrad, O. Chumak, Vladimir Kopecky
INVESTIGATION OF STRUCTURE OF TURBULENT BOUNDARY LAYER BETWEEN THERMAL PLASMA JET AND AMBIENT AIR
Progress in Plasma Processing of Materials, 1999, Vol.1, 1999, issue
Milan Hrabovsky, M. Konrad, Vladimir Kopecky
EFFECT OF PRESSURE ON BEHAVIOR OF ANODE ATTACHMENT OF DC ARC PLASMA TORCH
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.9, 2005, issue 3
T. Kavka, Milan Hrabovsky, M. Konrad, O. Chumak, Vladimir Kopecky
ANALYSIS OF PLASMA JETS GENERATED IN GAS AND GAS-WATER TORCHES
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.11, 2007, issue 1
T. Kavka, A. Maslani, O. Chumak, V. Sember, Vladimir Kopecky
MODELING OF TRANSIENT BEHAVIOR OF FREE PLASMA JET
Progress in Plasma Processing of Materials, 2001, Vol.0, 2001, issue
G. V. Miloshevskii, I. Yu. Smurov, V. I. Tolkach