Macro-instability: a chaotic flow component in stirred tanks
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F08%3A00020786" target="_blank" >RIV/60461373:22340/08:00020786 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Macro-instability: a chaotic flow component in stirred tanks
Original language description
Chaotic features of the macro-instability (MI) of flow patterns in stirred tanks are studied in this paper. Datasets obtained by measuring the axial component of the fluid velocity and the tangential force affecting the baffles are used. Two geometrically identical, flatbottomed cylindrical mixing tanks (diameter of 0.3 m) stirred with either pitched blade turbine impellers or Rushton turbine impeller are used in the experiments, and water and aqueous glycerol solutions are used as the working liquids.First, the presence of the MI component in the data is examined by spectral analysis. Then, the MI components are identified in the data using the proper orthogonal decomposition (POD) technique. The attractors of the macro-instability are reconstructedusing either the POD eigenmodes or a method of delays and finally the attractor invariants are evaluated. The dependence of the correlation dimension and maximum Lyapunov exponent on the vessel operational conditions is determined togethe
Czech name
Makro-nestabilita: chotická složka toku kapaliny v míchacích nádobách
Czech description
Jsou studovány chaotické aspekty makro-nestabilitních komponent toku kapaliny v míchacích nádobách. Experimentální data pocházejí z cylindrických míchacích nádob s plochým dnem promíchávaných buďto lopatkovým nebo turbinovým míchadlem. Jsou použita datarůzné fyzikální podstaty ? rychlostní data a síly působící na narážky. Jsou rekonstruovány chaotické atraktory makro-nestabilitních složek dat a určeny hodnoty jejich chaotických invariantů v závislosti na geometrických a provozních parametrech míchací nádoby.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA104%2F05%2F2500" target="_blank" >GA104/05/2500: Flow macro-instability in stirred vessels: experimental studies, description and modelling</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Philosophical Transactions of Royal Society A
ISSN
1364-503X
e-ISSN
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Volume of the periodical
366
Issue of the periodical within the volume
1864
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
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UT code for WoS article
000251927300009
EID of the result in the Scopus database
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