Gas–liquid flow modeling in columns equipped with structured packing

Soulaine, Cyprien; Horgue, Pierre; Franc, Jacques; Quintard, Michel

doi:10.1002/aic.14550

Cited by 36 publications

(12 citation statements)

References 54 publications

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“…been used for other two-phase flows Sheldon and Cardwell, 1959;Soulaine et al, 2014). The waste height (40 cm) was discretized using 96 computational cells (each Dx of 4 mm).…”

Section: Numerical Simulationsmentioning

confidence: 99%

Assessment of percolation through a solid leach bed in dry batch anaerobic digestion processes

Shewani

Horgue²,

Pommier³

et al. 2015

Bioresource Technology

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This work aimed at assessing water percolation through a solid cow manure leach bed in dry batch AD processes. A laboratory-scale percolation column and an experimental methodology were set up. Water behaviour was modelled by a double porosity medium approach. An experimental procedure was proposed to determine the main hydrodynamic parameters of the multiphase flow model: the porosity, the permeability and the term for water exchange from macro- to micro-porosity. Micro- and macro-porosity values ranged from 0.42 to 0.70 m(3) m(-3) and 0.18 to 0.50 m(3) m(-3). Intrinsic permeability values for solid cow manure ranged from 5.55·10(-11) to 4.75·10(-9) m(2). The term for water exchange was computed using a 2nd order model. The CFD tool developed was used to simulate successive percolation and drainage operations. These results will be used to design leachate recirculation strategies and predict biogas production in full-scale dry AD batch processes.

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“…been used for other two-phase flows Sheldon and Cardwell, 1959;Soulaine et al, 2014). The waste height (40 cm) was discretized using 96 computational cells (each Dx of 4 mm).…”

Section: Numerical Simulationsmentioning

confidence: 99%

Assessment of percolation through a solid leach bed in dry batch anaerobic digestion processes

Shewani

Horgue²,

Pommier³

et al. 2015

Bioresource Technology

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“…The authors compared CFD prediction of liquid spreading in the Mellapak 250X commercial packing previously studied by means of gamma-ray tomography, good agreement being observed. Soulaine et al (2014) developed CFD modeling for simulation of gas-liquid flow on bistructured porous media representing structured packing. The set of macroscale equations that makes up the model combines three continuity equations and three multiphase Darcy's laws and is directly based on the Darcy generalised model.…”

Section: Structured Packing Characterisation By Using Cfdmentioning

confidence: 99%

Use of Computational Fluid Dynamics for Absorption Packed Column Design

Haroun

Raynal

2015

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-Computational Fluid Dynamics (CFD) is today commonly used in a wide variety of process industries and disciplines for the development of innovative technologies. The present article aims to show how CFD can be used as an effective analysis and design tool for the development and design of packed gas/liquid absorption columns. It is first shown how CFD can be used for the characterisation of packings. The different hydrodynamic and mass transfer design parameters are investigated and adapted CFD methods are suggested. Secondly, column distribution internal development is discussed to show how CFD simulations should be performed to improve the design of gas and liquid distributors. An example of the development of new distribution technologies for floating installation of a reactive absorption column is also presented.Résumé -Utilisation de la dynamique des fluides numérique pour le design des colonnes d'absorption à garnissages -La dynamique des fluides numérique (Computational Fluid Dynamics, CFD) est aujourd'hui couramment utilisée pour le développement de technologies innovantes dans de nombreux domaines et procédés industriels. Cet article a pour objectif de montrer comment la CFD peut être utilisée comme outil d'analyse et de dimensionnement pour le développement des colonnes d'absorption gaz-liquide à garnissages. En premier, il est présenté comment la CFD peut être utilisée pour caractériser les différents paramètres de dimensionnement d'un garnissage (hydrodynamique et transfert). Les méthodes CFD appropriées sont suggérées et discutées. En second, l'utilisation de la CFD pour le développement et l'optimisation des internes de distribution gaz-liquide est exposée. Un exemple de développement par CFD d'une nouvelle technologie de distribution pour une colonne d'absorption réactive sur une installation flottante offshore est présenté.

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“…The spreading of a jet impinging such a porous medium as described by these models is illustrated Fig. 5 taken from [62]. One sees, depending on the intensity of the exchange term, that the two liquid phases show a distinct shape with two separate jets when there is barely no exchange, while the jet spreads more like the classical solution for a capillary porous material when the exchange is strong.…”

Section: Models With Splitting Of Phasementioning

confidence: 99%

“…In this case, a single macro-scale equation for describing the liquid phase flow is very difficult to develop. Models with a splitted liquid phase, i.e., one macro-scale equation for the gas phase but two macro-scale equations for the liquid, have been proposed to handle such cases [60][61][62]. In this framework, one has a balance equation for the gas phase (a single effective phase is enough in the context of structured packings so far), γ, and two balance equations for liquid phase part 1, β 1 , and liquid phase part 2, β 2 .…”

Section: Models With Splitting Of Phasementioning

confidence: 99%