. . "22340" . . "RIV/60461373:22340/05:00014470!RIV06-GA0-22340___" . "Praha" . "Chaotick\u00E9 aspekty dynamiky makro-nestabilitn\u00EDch tok\u016F v m\u00EDchan\u00FDch n\u00E1dob\u00E1ch"@cs . . "Flow macro-instabilities in stirred tanks"@en . . . "Chaotick\u00E9 aspekty dynamiky makro-nestabilitn\u00EDch tok\u016F v m\u00EDchan\u00FDch n\u00E1dob\u00E1ch" . . "Chaotic features of macro-instability components of fluid motions in stirred tanks are addressed in this paper. We analyse several experimental data sets obtained by measuring distinct fluid flow related quantities in a flat-bottomed cylindrical mixing vessels (inner diameter of 0.3 m) stirred either with pitched blade turbine (PBT) impellers or with Rushton turbine (RTI) impellers using water or aqueous glycerol solutions as working liquids. First, a presence of the MI component in the data is examined by spectral analysis. Then, the MI components are identified in the data and time evolution of MI is reconstructed using the proper orthogonal decomposition (POD) technique. The attractors of the macro-instability are further reconstructed using either the POD eigenmodes or a method of delays and finally attractor invariants are evaluated (fractal dimensions, Lyapunov exponents, entropy production rates etc.) and their dependences on the vessel operational conditions and spatial distributions in the ve"@en . . . "2005-10-17+02:00"^^ . "P\u0159\u00EDsp\u011Bvek je zam\u011B\u0159en na anal\u00FDzu dynamick\u00E9ho chov\u00E1n\u00ED tzv. makro-nestabilitn\u00EDch tok\u016F v m\u00EDchac\u00EDch n\u00E1dob\u00E1ch s rota\u010Dn\u00EDmi rychlob\u011B\u017En\u00FDmi m\u00EDchadly z hlediska jejich deterministicky chaotick\u00FDch aspekt\u016F. Je vykon\u00E1na anal\u00FDza chaotick\u00FDch rys\u016F makro-nestabilitn\u00EDch tok\u016F s pou\u017Eit\u00EDm rozs\u00E1hl\u00E9ho souboru experiment\u00E1ln\u00EDch dat. V\u0161echna data byla z\u00EDsk\u00E1na ve standardn\u00ED v\u00E1lcov\u00E9 m\u00EDchac\u00ED n\u00E1dob\u011B s ploch\u00FDm dnem a \u010Dty\u0159mi radi\u00E1ln\u00EDmi nar\u00E1\u017Ekami. Z experiment\u00E1ln\u00EDch dat byly kombinac\u00ED spektr\u00E1ln\u00ED anal\u00FDzy a n\u00E1le\u017Eit\u00E9 orthogon\u00E1ln\u00ED dekompozice (POD - proper orthogonal decomposition) extrahov\u00E1ny makro-nestabilitn\u00ED slo\u017Eky a rekonstruov\u00E1ny jejich chaotick\u00E9 atraktory, pro kter\u00E9 byly vy\u010D\u00EDsleny hodnoty vybran\u00FDch invariant\u016F - korela\u010Dn\u00ED dimense a Ljapunovov\u00FDch exponent\u016F - v z\u00E1vislosti na provozn\u00EDch podm\u00EDnk\u00E1ch a na poloze m\u011B\u0159ic\u00EDho m\u00EDsta v n\u00E1dob\u011B." . "P(GA104/05/2500), Z(MSM6046137306)" . . "[112FCE1C51ED]" . . . "Sborn\u00EDk 52. konference chemick\u00E9ho a procesn\u00EDho in\u017Een\u00FDrstv\u00ED CHISA 2005" . . . "P\u0159\u00EDsp\u011Bvek je zam\u011B\u0159en na anal\u00FDzu dynamick\u00E9ho chov\u00E1n\u00ED tzv. makro-nestabilitn\u00EDch tok\u016F v m\u00EDchac\u00EDch n\u00E1dob\u00E1ch s rota\u010Dn\u00EDmi rychlob\u011B\u017En\u00FDmi m\u00EDchadly z hlediska jejich deterministicky chaotick\u00FDch aspekt\u016F. Je vykon\u00E1na anal\u00FDza chaotick\u00FDch rys\u016F makro-nestabilitn\u00EDch tok\u016F s pou\u017Eit\u00EDm rozs\u00E1hl\u00E9ho souboru experiment\u00E1ln\u00EDch dat. V\u0161echna data byla z\u00EDsk\u00E1na ve standardn\u00ED v\u00E1lcov\u00E9 m\u00EDchac\u00ED n\u00E1dob\u011B s ploch\u00FDm dnem a \u010Dty\u0159mi radi\u00E1ln\u00EDmi nar\u00E1\u017Ekami. Z experiment\u00E1ln\u00EDch dat byly kombinac\u00ED spektr\u00E1ln\u00ED anal\u00FDzy a n\u00E1le\u017Eit\u00E9 orthogon\u00E1ln\u00ED dekompozice (POD - proper orthogonal decomposition) extrahov\u00E1ny makro-nestabilitn\u00ED slo\u017Eky a rekonstruov\u00E1ny jejich chaotick\u00E9 atraktory, pro kter\u00E9 byly vy\u010D\u00EDsleny hodnoty vybran\u00FDch invariant\u016F - korela\u010Dn\u00ED dimense a Ljapunovov\u00FDch exponent\u016F - v z\u00E1vislosti na provozn\u00EDch podm\u00EDnk\u00E1ch a na poloze m\u011B\u0159ic\u00EDho m\u00EDsta v n\u00E1dob\u011B."@cs . "V1.25/1-V1.25/8" . "Srn\u00ED, \u0160umava" . "Jahoda, Milan" . . "Fo\u0159t, Ivan" . . "3"^^ . . "Chaotick\u00E9 aspekty dynamiky makro-nestabilitn\u00EDch tok\u016F v m\u00EDchan\u00FDch n\u00E1dob\u00E1ch" . "RIV/60461373:22340/05:00014470" . "8"^^ . "514963" . . "Hasal, Pavel" . "80-86059-42-1" . "macro-instability; mixing vessel; nonlinear analysis; correlation dimension"@en . "Ing. Jan Novosad, Procesn\u00ED in\u017Een\u00FDrstv\u00ED" . . "2"^^ . . "Chaotick\u00E9 aspekty dynamiky makro-nestabilitn\u00EDch tok\u016F v m\u00EDchan\u00FDch n\u00E1dob\u00E1ch"@cs . "Flow macro-instabilities in stirred tanks"@en .