Evaluation of the turbulent kinetic dissipation rate in an agitated vessel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F16%3A00000861" target="_blank" >RIV/46747885:24620/16:00000861 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/16:00304576

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of the turbulent kinetic dissipation rate in an agitated vessel

Popis výsledku v původním jazyce

The design of agitated tanks depends on operating conditions and processes for that are used for. An important parameter for the scale-up modelling si the dissipation rate of the turbulent kinetic energy. The dissipation rate is commonly assumed to be a function of the impeller power input. But this approach gives no information about distribution of the dissipation rate inside the agitated volume. In this paper the distributions of the dissipation rate inside the agitated vessels are estimated by evaluations of the CFD (Computational Fluid Dynamics). The results obtained from RANS (Reynolds Averaged Navier-Stokes equations) k-e turbulent model vessels with standard geometry equipped with flour baffles and stirred by either a standard Rushton turbine or a high shear impeller were investigated. The results are compared with mean dissipation rate estimated from the total impeller power input.

Název v anglickém jazyce

Evaluation of the turbulent kinetic dissipation rate in an agitated vessel

Popis výsledku anglicky

The design of agitated tanks depends on operating conditions and processes for that are used for. An important parameter for the scale-up modelling si the dissipation rate of the turbulent kinetic energy. The dissipation rate is commonly assumed to be a function of the impeller power input. But this approach gives no information about distribution of the dissipation rate inside the agitated volume. In this paper the distributions of the dissipation rate inside the agitated vessels are estimated by evaluations of the CFD (Computational Fluid Dynamics). The results obtained from RANS (Reynolds Averaged Navier-Stokes equations) k-e turbulent model vessels with standard geometry equipped with flour baffles and stirred by either a standard Rushton turbine or a high shear impeller were investigated. The results are compared with mean dissipation rate estimated from the total impeller power input.

Druh

O - Ostatní výsledky

CEP obor

JP - Průmyslové procesy a zpracování

OECD FORD obor

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Projekt

<a href="/cs/project/GA16-20175S" target="_blank" >GA16-20175S: Lokální rychlost disipace turbulentní energie v dispersních systémech</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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