Institute of Plasma Physics - project detail 00054

Formation of spatial patterns and their dynamical behaviour in thermal plasma jets
Project ID:	IAA1057202
Provider:	Grant Agency of the Academy of Sciences
Period:	Jan 01, 2002 - Dec 31, 2004
Recipient - coordinator	Institute of Plasma Physics, Czech Academy of Sciences, Prague
Principal Investigator:	RNDr. Miloš Konrád
Co-recepient(s) / PI(s):	Institute of Photonics and Electronics of the CAS, v. v. i. -- RNDr. Jan Hlína, CSc.
Co-investigators from IPP	M. Hrabovský, V. Kopecký, V. Sember, T. Kavka
Aims of the project: The project aims at the experimental investigations and analysis of organised structures generated in plasma jets. A special attention will be paid to the confrontation of i) the experimental data about the patterns acquired in the form of long time series reflecting the local temporal evolution of the plasma optical radiation or electrical potential and ii) information about the spatial forms of the structures acquired by means of a fast CCD camera system. Different types of plasma jets will be used for the experiments: classical jets with argon gas, water stabilised jets and their combination. The effect of different physical parameters of these plasma jets (especially different plasma velocities and densities) on the formation of spatial patterns will be thus studied. The evaluation of the measured time series will be based on the Fourier analysis and wavelet transform affording the information about the frequencies of significant oscillations present in the plasma jets.
Progress/Results: It was has brought new knowledge concerning the influence of parameters of thermal plasma jets on the generation of turbulent structures,the shape of statistical distribution functions, spatial distribution of various types of characteristic oscillations
Results:
Kopecký V.: Dependence of Frequency and Phase Velocity of Plasma Jet Hydrodynamic Instability on Sound Velocity. Czechoslovak Journal of Physics 54 [suppl.C] (2004) C1056-C1061. [ Abstract ] [Symposium on Plasma Physics and Technology /21./. Praha, 14.06.2004-17.06.2004]
Kavka T., Gregor J., Chumak O., Hrabovský M.: Effect of Arc Power and Gas Flow Rate on Properties of Plasma Jet under Reduced Pressures. Czechoslovak Journal of Physics 54 [suppl. C] (2004) C753-C758. [ Abstract ] [Symposium on Plasma Physics and Technology/21st./. Praha, 14.06.2004-17.06.2004]
Gregor J., Jakubová I., Šenk J., Konrád M.: Experimental investigation of hot gas mixture free jet. Czechoslovak Journal of Physics 54 [suppl.C] (2004) C696-C701. [ Abstract ] [Symposium on Plasma Physics and Technology/21st./. Praha, 14.06.2004-17.06.2004]
Hrabovský M., Heinz J., Jakubová I., Šenk J.: Theoretical-experiment investigation of intesively blasted electric arc. Proceedings of the XVth International Conference on Gas Discharge and their Applications. Toulous, 2004 - (Bordage, M.; Gleizes, A.; Gonzales, J.) s. 129-132. [ Abstract ] [International Conference on Gas Discharges and their Applications - GD 2004 /15./. Toulouse (FR), 05.09.2004-10.09.2004]
Hrabovský M., Heinz J., Jakubová I., Šenk J.: Theoretical-experimental investigation of intensively blasted electric arc. Proceedings of the XVth International Conference on Gas Discharges and their Applications. Toulous, 2004 - (Bordage, M.; Gleizes, A.; Gonzales, J.) s. 129-132. [ Abstract ] [International Conference on Gas Discharges and their Applications - GD 2004 /15./. Toulouse (FR), 05.09.2004-10.09.2004]
Hlína J., Šonský J., Něnička V., Hrabovský M., Konrád M., Kopecký V., Chumak O.: Influence of external pressure on turbulent phenomena in a thermal plasma jet. High Temperature Materials and Processes 8 [2] (2004) 207-214. [ Abstract ]
Hlína J., Šonský J., Něnička V., Hrabovský M., Konrád M., Kopecký V., Chumak O.: Influence of External Pressure on Turbulent Phenomena in a Thermal Plasma Jet. High Temperature Materials and Processes 8 [1-4] (2004) 207-214. [ Abstract ]
Hrabovský M., Kopecký V., Chumak O.: Investigation of water-argon stabilized arc at reduced pressures. Proceedings of the XVth International Conference on Gas Discharges and their Applications. Toulous, 2004 - (Bordage, M.; Gleizes, A.; Gonzales, J.) s. 93-96. [ Abstract ] [International Conference on Gas Discharges and their Applications - GD 2004 /15./. Toulouse (FR), 05.09.2004-10.09.2004]
Sember V., Kavka T., Kopecký V., Hrabovský M.: Comparison of Spectroscopic and Enthalpy Probe Measurements in H2O-Ar Thermal Plasma Jet. Proceedings of 16th International Symposium on Plasma Chemistry. Bari : Department of Chemistry, University of Bari, 2003 - (d'Agostino, R.; Favia, P.; Fracassi, F.; Palumbo, F.) s. -. [ Abstract ] [International Symposium on Plasma Chemistry/16th./. Taormina (IT), 22.06.2003-27.06.2003]
Sember V., Kavka T., Kopecký V., Hrabovský M.: Spectroscopic and Enthalpy probe Diagnostics of Fluctuating H2O-Ar Thermal Plasma Jet. Proceedings of 15th Symposium on Switching Arc. Brno : Department of Power Electrical and Electronic Engineering and Communication, Brno University of Technology, 2003 - (Gross, B.; Vávra, Z.; Bartl, J.) s. 211-214. ISBN 80-214-2307-2. [ Abstract ] [Symposium on Physics of Switching Arc /15th./. Nové Město na Moravě (CZ), 22.09.2003-26.09.2003]
Chumak O., Hrabovský M., Kopecký V., Konrád M.: Study of Anode Attachment Behavior and Its Influence on Plasma Jet in Water-Argon Plasma Torch. 15th Symposium on Physics of Schwitching Arc. Brno : Department of Power Electrical and Electronic Engineering, University of Technology Brno, 2003 - (Gross, B.; Vávra, Z.; Bartl, J.) s. 44-47. ISBN 80-214-2307-2. [ Abstract ] [Symposium on Physics of Schwitching Arc/15th./. Nové Město na Moravě (CZ), 22.09.2003-26.09.2003]
Chumak O., Hrabovský M., Kopecký V.: Interaction between anode attachment and plasma jet in DC arc plasma spraying torch. International Conference on Physics of Low Temperature Plasma 03. Kyiv : NASU, 2003 - (Zhovtyansky, V.) s. 6-11. [ Abstract ] [International Conference on Physics Low Temperature Plasma 03.. Kyiv (UA), 11.05.2003-15.05.2003]
Kopecký V., Hrabovský M.: Effect of plasma density on parameters of hydrodynamic osillations in thermal plasma jet. Czechoslovak Journal of Physics 52 [supplement D] (2002) 567-570. [ Abstract ] [Symposium on Plasma Physics and Technology/20./. Prague, 10.06.2002-13.06.2002]
Kopecký V., Hrabovský M.: Hydrodynamic instability of thermal plasma flow generated by a hybrid steam-argon torch. Conference Proceedings Join Conference ESCAMPING 16 and ICRP 5. Grenoble : CMRS, 2002 - (Sadeghi, N.; Sugai, H.) s. 259-260. [ Abstract ] [European Conference on Atomic and Molecular Physics of Ionized Gases and 5th International Conference on Reactive Plasmas/16th./. Grenoble (FR), 14.07.2002-18.07.2002]