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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F08%3A00020794%21RIV09-MSM-22340___
rdf:type
skos:Concept n11:Vysledek
dcterms:description
Jsou prezentovány výsledky experimentálního studia pohybu volné hladiny kapaliny ve třech míchacích nádobách o průměru 0,29 m, 0,50 m a 1 m. Nádoby byly optřeny radiálními narážkami a promíchávány lopatkovými míchadly v širokém rozmezí frekvencí otáčení. Pohyby hladiny jsou charakterizovány statistickýnmi a chaotickými invarianty a jsou vyčísleny jejich závislosti na provozních podmínkách nádob. We consider the liquid flow in a stirred tank with rotational mechanical impeller as a highly complex, multi-component dynamical system exhibiting unstable (pseudo-stationary) dynamical behavior. Within the variety of the flow components in a stirred tank large-scale, low frequency, pseudo-periodic fluctuations that substantially influence mixing characteristics of the stirred vessel are frequently encountered. These flow fluctuations ? instabilities ? are associated with recurrent fast liquid jets originating at the vessel bottom and ascending along the baffles and the tank wall. In our paper we aim to statistical and dynamical analysis of the free liquid surface motions in three stirred vessels and to investigation of occurrence of local macro-swells of the liquid surface near a baffle. The experiments were carried out in standard flat-bottomed cylindrical mixing vessels with four radial wall baffles (inner diameter T = 0.29 m, T = 0.50 m and T = 1 m, respectively). Water was used as a working liqui We consider the liquid flow in a stirred tank with rotational mechanical impeller as a highly complex, multi-component dynamical system exhibiting unstable (pseudo-stationary) dynamical behavior. Within the variety of the flow components in a stirred tank large-scale, low frequency, pseudo-periodic fluctuations that substantially influence mixing characteristics of the stirred vessel are frequently encountered. These flow fluctuations ? instabilities ? are associated with recurrent fast liquid jets originating at the vessel bottom and ascending along the baffles and the tank wall. In our paper we aim to statistical and dynamical analysis of the free liquid surface motions in three stirred vessels and to investigation of occurrence of local macro-swells of the liquid surface near a baffle. The experiments were carried out in standard flat-bottomed cylindrical mixing vessels with four radial wall baffles (inner diameter T = 0.29 m, T = 0.50 m and T = 1 m, respectively). Water was used as a working liqui
dcterms:title
Pohyb volné hladiny kapaliny v míchacích nádobách ? experimenty a analýza An experimental study of free liquid surface motions in stirred tanks An experimental study of free liquid surface motions in stirred tanks
skos:prefLabel
An experimental study of free liquid surface motions in stirred tanks An experimental study of free liquid surface motions in stirred tanks Pohyb volné hladiny kapaliny v míchacích nádobách ? experimenty a analýza
skos:notation
RIV/60461373:22340/08:00020794!RIV09-MSM-22340___
n5:aktivita
n8:Z n8:P
n5:aktivity
P(GA104/05/2500), Z(MSM6046137306)
n5:dodaniDat
n12:2009
n5:domaciTvurceVysledku
n10:9639675 n10:1273515
n5:druhVysledku
n18:D
n5:duvernostUdaju
n6:S
n5:entitaPredkladatele
n16:predkladatel
n5:idSjednocenehoVysledku
355666
n5:idVysledku
RIV/60461373:22340/08:00020794
n5:jazykVysledku
n19:eng
n5:klicovaSlova
Stirred tank; Free surface; Macro-instability; Macro-swells; Spectral analysis
n5:klicoveSlovo
n14:Stirred%20tank n14:Spectral%20analysis n14:Macro-instability n14:Macro-swells n14:Free%20surface
n5:kontrolniKodProRIV
[03451A1C2D5A]
n5:mistoKonaniAkce
Praha
n5:mistoVydani
Praha
n5:nazevZdroje
CD-ROM of Full Texts CHISA 2008
n5:obor
n17:CI
n5:pocetDomacichTvurcuVysledku
2
n5:pocetTvurcuVysledku
5
n5:projekt
n7:GA104%2F05%2F2500
n5:rokUplatneniVysledku
n12:2008
n5:tvurceVysledku
Crinelli, F. Fořt, I. Magelli, F. Jahoda, Milan Hasal, Pavel
n5:typAkce
n22:WRD
n5:zahajeniAkce
2008-08-24+02:00
n5:zamer
n9:MSM6046137306
s:numberOfPages
17
n15:hasPublisher
Process Engineering Publisher
n21:isbn
978-80-02-02047-9
n20:organizacniJednotka
22340