Prostorové rozložení intenzity disipace energie v nádobě míchané různými typy míchadel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F05%3A00014830" target="_blank" >RIV/60461373:22340/05:00014830 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Spatial distribution of energy dissipation intensity in gas-liquid dispersion agitated by various impellers

Popis výsledku v původním jazyce

The spatial distribution of the energy dissipation rate in a stirred gas-liquid dispersion is studied experimentally. The local values of the energy dissipation rate are determined from the velocity data obtained by means of constant temperature anemometry (CTA). This method is based on the cooling effect of a flow on a small heated body, providing continuous velocity time series. The processing technique divides the measured velocity signal in parts corresponding to bubbles and to continuous phase. Thecontinuous-phase data are statistically processed to get the mean and fluctuation velocity components in all three directions and the kinetic energy of turbulence. The results are presented for bubbly air-water dispersions stirred by Rushton turbine, pitched blade impeller and Techmix 335 impeller. The turbulent characteristics in gas-liquid dispersions are compared with those measured in liquid phase.

Název v anglickém jazyce

Spatial distribution of energy dissipation intensity in gas-liquid dispersion agitated by various impellers

Popis výsledku anglicky

The spatial distribution of the energy dissipation rate in a stirred gas-liquid dispersion is studied experimentally. The local values of the energy dissipation rate are determined from the velocity data obtained by means of constant temperature anemometry (CTA). This method is based on the cooling effect of a flow on a small heated body, providing continuous velocity time series. The processing technique divides the measured velocity signal in parts corresponding to bubbles and to continuous phase. Thecontinuous-phase data are statistically processed to get the mean and fluctuation velocity components in all three directions and the kinetic energy of turbulence. The results are presented for bubbly air-water dispersions stirred by Rushton turbine, pitched blade impeller and Techmix 335 impeller. The turbulent characteristics in gas-liquid dispersions are compared with those measured in liquid phase.

Druh

O - Ostatní výsledky

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2005

Kód důvěrnosti údajů

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