Analysis of macro-instability of flow pattern induced tangential force affecting radial baffles in a stirred vessel

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F05%3A00014472" target="_blank" >RIV/60461373:22340/05:00014472 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Analysis of macro-instability of flow pattern induced tangential force affecting radial baffles in a stirred vessel

Original language description

Macro-instability (MI) of a flow pattern in stirred vessels has been recognised during last decade as a phenomenon that markedly influences all processes taking place in mixing vessels (homogenisation, suspendation, heat and mass transfer, chemical reactions etc.) The macro-instability is tightly linked to variations of the velocity field in the vessel and therefore it also exerts strong force effects on solid surfaces being in contact with the stirred liquid (vessel walls, cooling/heating coils, drafttubes, baffles etc.) We analyse the macro-instability related forces exerted by a stirred liquid in a standard cylindrical mixing vessel with pitched blade impellers or the Rushton turbine impeller by a combination of spectral analysis and proper orthogonal decomposition. Frequency of the MI-related part of the force and relative contribution of the MI-related force component to total force are determined and analysed. Chaotic invariants of the MI-related component of the force are also

Czech name

Analýza makro-nestabilitní složky tangenciální síly působící na radiální narážky v míchací nádobě

Czech description

V práci jsou presentovány výsledky analýzy dynamických sil působících na narážky v míchací nádobě s různými typy míchadel. Je použita spektrální analýza v kombinaci s Karhunenovou-Loévovou dekomposicí. Jsou vyhodnoceny frekvence makronestabilitních složek působící síly a její magnituda a její rozložení podél narážky.

Type

D - Article in proceedings

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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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)

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proc. of 32th International Conference of Slovak Society of Chemical Engineering.

ISBN

80-227-2224-3

ISSN

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e-ISSN

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Number of pages

9

Pages from-to

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Publisher name

Slovak University of Technology

Place of publication

Bratislava

Event location

Tatranské Matliare, Slovensko

Event date

May 23, 2005

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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