Use of the turbulent drag correction and the population balance model in gas-liquid flow modelling using CFD

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F12%3A43894170" target="_blank" >RIV/60461373:22340/12:43894170 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Use of the turbulent drag correction and the population balance model in gas-liquid flow modelling using CFD

Popis výsledku v původním jazyce

The main topic of this study is the experimental measurement and mathematical modelling of global gas hold-up and bubble size distribution in an aerated stirred vessel using the CFD (Computational Fluid Dynamics) method. The air-water system consisted ofa mixing tank of diameter T = 0.29 m, which was equipped with a six-bladed Rushton turbine. Calculations were performed with the CFD software CFX 12.1. The turbulent quantities were predicted using the standard k-epsilon turbulence model and the rotating impeller was modelled via the MRF method. Coalescence and breakup of bubbles were modelled using the homogeneous MUSIG method with 13 bubble size groups. Several different drag coefficient correlations were implemented in the solver, and their influence on the results was studied. Turbulent drag correction to reduce the bubble slip velocity proved to be essential to achieve agreement of the simulated gas distribution with experiments. The widely used breakup model by Luo and Svendsen w

Název v anglickém jazyce

Use of the turbulent drag correction and the population balance model in gas-liquid flow modelling using CFD

Popis výsledku anglicky

The main topic of this study is the experimental measurement and mathematical modelling of global gas hold-up and bubble size distribution in an aerated stirred vessel using the CFD (Computational Fluid Dynamics) method. The air-water system consisted ofa mixing tank of diameter T = 0.29 m, which was equipped with a six-bladed Rushton turbine. Calculations were performed with the CFD software CFX 12.1. The turbulent quantities were predicted using the standard k-epsilon turbulence model and the rotating impeller was modelled via the MRF method. Coalescence and breakup of bubbles were modelled using the homogeneous MUSIG method with 13 bubble size groups. Several different drag coefficient correlations were implemented in the solver, and their influence on the results was studied. Turbulent drag correction to reduce the bubble slip velocity proved to be essential to achieve agreement of the simulated gas distribution with experiments. The widely used breakup model by Luo and Svendsen w

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

—

Projekt

<a href="/cs/project/GA104%2F09%2F1290" target="_blank" >GA104/09/1290: Matematické modelování vícefázového proudění v mechanicky míchaných systémech</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

39th International Conference of Slovak Society of Chemical Engineering

ISBN

978-80-89475-04-9

ISSN

—

e-ISSN

—

Počet stran výsledku

10

Strana od-do

1273-1282

Název nakladatele

Slovak Society of Chemical Engineering

Místo vydání

Bratislava

Místo konání akce

Tatranské Matliare

Datum konání akce

21. 5. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—