. "2"^^ . "RIV/61388998:_____/08:00309523" . "\u0160onsk\u00FD, Ji\u0159\u00ED" . . "Opakuj\u00EDc\u00ED se vlastnosti koherentn\u00EDch struktur ve voln\u00E9m proudu termick\u00E9ho plazmatu"@cs . . "Recurrent Properties of Coherent Structures in a Thermal Plasma Jet"@en . . "Hl\u00EDna, Jan" . "RIV/61388998:_____/08:00309523!RIV09-AV0-61388998" . "Recurrent Properties of Coherent Structures in a Thermal Plasma Jet" . "391803" . "Opakuj\u00EDc\u00ED se vlastnosti koherentn\u00EDch struktur ve voln\u00E9m proudu termick\u00E9ho plazmatu"@cs . . . "Recurrent Properties of Coherent Structures in a Thermal Plasma Jet"@en . "We have studied recurrent properties of coherent structures in experiments with a dc argon plasma torch working at various gas flow rates. The plasma jet radiation was projected through 4 objective lens on face areas of linear arrays of optical fibers and photodiodes arranged at 4 directions and 2 levels above the nozzle. The distributions of plasma radiation in measurement planes were reconstructed using the inverse Radon transform. The results show that the principal frequencies controlling the occurrence of similar coherent structures are the frequency 300 Hz and its first harmonic 600 Hz." . "Z(AV0Z20570509)" . . "We have studied recurrent properties of coherent structures in experiments with a dc argon plasma torch working at various gas flow rates. The plasma jet radiation was projected through 4 objective lens on face areas of linear arrays of optical fibers and photodiodes arranged at 4 directions and 2 levels above the nozzle. The distributions of plasma radiation in measurement planes were reconstructed using the inverse Radon transform. The results show that the principal frequencies controlling the occurrence of similar coherent structures are the frequency 300 Hz and its first harmonic 600 Hz."@en . "Recurrent Properties of Coherent Structures in a Thermal Plasma Jet" . "Studovali jsme opakuj\u00EDc\u00ED se vlastnosti koherentn\u00EDch struktur p\u0159i experimentech se stejnosm\u011Brn\u011B buzen\u00FDm argonov\u00FDm plazmatronem pracuj\u00EDc\u00EDm p\u0159i r\u016Fzn\u00E9m pr\u016Ftoku plynu. Z\u00E1\u0159en\u00ED plazmatu bylo zobrazeno 4 objektivy na \u010Deln\u00ED plochy optick\u00FDch vl\u00E1ken s fotodiodami, kter\u00E9 byly uspo\u0159\u00E1d\u00E1ny ve 4 sm\u011Brech a 2 \u00FArovn\u00EDch nad tryskou. Rozd\u011Blen\u00ED z\u00E1\u0159en\u00ED plazmatu v m\u011B\u0159\u00EDc\u00EDch rovin\u00E1ch byla rekonstruov\u00E1na inverzn\u00ED Radonovou transformac\u00ED. V\u00FDsledky ukazuj\u00ED, \u017Ee z\u00E1kladn\u00ED frekvence \u0159\u00EDd\u00EDc\u00ED opakov\u00E1n\u00ED podobn\u00FDch koherentn\u00EDch struktur jsou frekvence 300 Hz a jej\u00ED prvn\u00ED harmonick\u00E1 600 Hz."@cs . "[DE6685403EC0]" . . . . "thermal plasma jet; coherent structure; CCD camera"@en . . . "2"^^ . . . . .