Experimental determination of maximum effective hydrodynamic stress in multiphase flow using shear sensitive aggregates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F15%3A43900200" target="_blank" >RIV/60461373:22340/15:43900200 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/aic.14753" target="_blank" >http://dx.doi.org/10.1002/aic.14753</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/aic.14753" target="_blank" >10.1002/aic.14753</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental determination of maximum effective hydrodynamic stress in multiphase flow using shear sensitive aggregates

Popis výsledku v původním jazyce

Maximum effective hydrodynamic stress, max, responsible for the breakup of aggregates with size comparable to Kolmogorov eddies, was experimentally determined in an aerated stirred tank. The proposed method is based on the measurement of the maximum stable aggregates size consisting of poly(methyl methacrylate) nanoparticles. The fractal aggregates were broken under various operating conditions in an aerated stirred tank and calibrated with known flow conditions using contracting nozzles to convert themeasured aggregate sizes into hydrodynamic stress. It was found that max? can vary substantially among studied conditions and its magnitude depends on the controlling mechanism including gas jet during bubble formation, bubble rise, bubble burst at the gas-liquid interface or the turbulence generated by the impeller. The measured values are in good agreement with literature data which supports the applicability of this method to characterize the maximum effective hydrodynamic stress in c

Název v anglickém jazyce

Experimental determination of maximum effective hydrodynamic stress in multiphase flow using shear sensitive aggregates

Popis výsledku anglicky

Maximum effective hydrodynamic stress, max, responsible for the breakup of aggregates with size comparable to Kolmogorov eddies, was experimentally determined in an aerated stirred tank. The proposed method is based on the measurement of the maximum stable aggregates size consisting of poly(methyl methacrylate) nanoparticles. The fractal aggregates were broken under various operating conditions in an aerated stirred tank and calibrated with known flow conditions using contracting nozzles to convert themeasured aggregate sizes into hydrodynamic stress. It was found that max? can vary substantially among studied conditions and its magnitude depends on the controlling mechanism including gas jet during bubble formation, bubble rise, bubble burst at the gas-liquid interface or the turbulence generated by the impeller. The measured values are in good agreement with literature data which supports the applicability of this method to characterize the maximum effective hydrodynamic stress in c

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

AIChE Journal

ISSN

0001-1541

e-ISSN

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Svazek periodika

61

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

1735-1744

Kód UT WoS článku

000354696200024

EID výsledku v databázi Scopus

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