On Stability of a Bubble Column

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F13%3A00388399" target="_blank" >RIV/67985858:_____/13:00388399 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.cherd.2012.07.011" target="_blank" >http://dx.doi.org/10.1016/j.cherd.2012.07.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cherd.2012.07.011" target="_blank" >10.1016/j.cherd.2012.07.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On Stability of a Bubble Column

Popis výsledku v původním jazyce

The governing equations based on the mass balance of the gas phase in the bubble column were formulated, together with the closures for the two typical operational regimes, homogeneous and heterogeneous. The equations were analysed for the steady state solutions and their stability. Two solutions were found for the uniform regime, one stable and one unstable. Only one stable solution was found for the nonuniform regime. These solutions were investigated as they depend on the control parameters, namely on the gas input, terminal bubble speed, and the form of the closure relations for the collective bubble speed. The two branches of the uniform solution merge in the turning point bifurcation, at large enough gas input. The nonuniform solution branch persists for all plausible parameter values. Besides these physically relevant solutions, one solution branch was identified as physically unacceptable. The physical reasons for the system stability were discussed. The linear approximation of

Název v anglickém jazyce

On Stability of a Bubble Column

Popis výsledku anglicky

The governing equations based on the mass balance of the gas phase in the bubble column were formulated, together with the closures for the two typical operational regimes, homogeneous and heterogeneous. The equations were analysed for the steady state solutions and their stability. Two solutions were found for the uniform regime, one stable and one unstable. Only one stable solution was found for the nonuniform regime. These solutions were investigated as they depend on the control parameters, namely on the gas input, terminal bubble speed, and the form of the closure relations for the collective bubble speed. The two branches of the uniform solution merge in the turning point bifurcation, at large enough gas input. The nonuniform solution branch persists for all plausible parameter values. Besides these physically relevant solutions, one solution branch was identified as physically unacceptable. The physical reasons for the system stability were discussed. The linear approximation of

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GA104%2F07%2F1110" target="_blank" >GA104/07/1110: Hydrodynamika a transportní jevy ve vícefázových soustavách: od mikroměřítka k makroměřítku</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Research and Design

ISSN

0263-8762

e-ISSN

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Svazek periodika

91

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

191-203

Kód UT WoS článku

000315614000001

EID výsledku v databázi Scopus

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