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Studies of gas-liquid flow through reactors internals using VOF simulations

Identifieur interne : 00BB64 ( Main/Exploration ); précédent : 00BB63; suivant : 00BB65

Studies of gas-liquid flow through reactors internals using VOF simulations

Auteurs : Ludovic Raynal [France] ; Isabelle Harter [France]

Source :

Chemical engineering science [ 0009-2509 ] ; 2001.

RBID : Pascal:02-0068953

Descripteurs français

Pascal (Inist)
- Réacteur, Gaz liquide, Equipement interne réacteur, Hydrodynamique, Ecoulement diphasique, Ecoulement gaz liquide, Fraction volumique, Visualisation écoulement, Simulation numérique, Mécanique fluide numérique, Etude expérimentale.

English descriptors

KwdEn :
- Computational fluid dynamics, Experimental study, Flow visualization, Gas liquid, Gas liquid flow, Hydrodynamics, Numerical simulation, Reactor, Reactor internals, Two phase flow, Volume fraction.

Abstract

Two-phase flow through reactor internals have been experimentally and numerically studied. Experiments have been carried out with a setup running under ambient pressure for two configurations. The first configuration consists of a mixing box orifice inlet through which liquid flows as a film sheared by a gas flow. The liquid height at orifice inlet is documented over a wide range of liquid and gas flowrates. The second configuration consists of the two-phase flow through a downcomer of a distributing tray. Two and three dimensional computational fluid dynamic (CFD) simulations using the volume of fluid (VOF) approach have been used to compute both flows for similar flow conditions as used in the experiments. It is shown that the agreement between experiments and calculations is very good. Based on this good agreement, it is finally discussed how CFD can be used to achieve better design rules for gas-liquid reactor internals via simulations carried out for industrial process conditions.

Affiliations:

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Le document en format XML

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<term>Gas liquid flow</term>
<term>Hydrodynamics</term>
<term>Numerical simulation</term>
<term>Reactor</term>
<term>Reactor internals</term>
<term>Two phase flow</term>
<term>Volume fraction</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Réacteur</term>
<term>Gaz liquide</term>
<term>Equipement interne réacteur</term>
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<term>Ecoulement gaz liquide</term>
<term>Fraction volumique</term>
<term>Visualisation écoulement</term>
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<front><div type="abstract" xml:lang="en">Two-phase flow through reactor internals have been experimentally and numerically studied. Experiments have been carried out with a setup running under ambient pressure for two configurations. The first configuration consists of a mixing box orifice inlet through which liquid flows as a film sheared by a gas flow. The liquid height at orifice inlet is documented over a wide range of liquid and gas flowrates. The second configuration consists of the two-phase flow through a downcomer of a distributing tray. Two and three dimensional computational fluid dynamic (CFD) simulations using the volume of fluid (VOF) approach have been used to compute both flows for similar flow conditions as used in the experiments. It is shown that the agreement between experiments and calculations is very good. Based on this good agreement, it is finally discussed how CFD can be used to achieve better design rules for gas-liquid reactor internals via simulations carried out for industrial process conditions.</div>
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<name sortKey="Harter, Isabelle" sort="Harter, Isabelle" uniqKey="Harter I" first="Isabelle" last="Harter">Isabelle Harter</name>
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Studies of gas-liquid flow through reactors internals using VOF simulations

Studies of gas-liquid flow through reactors internals using VOF simulations

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri