Numerical Prediction of Two-Phase Flow in Tube Bundles with a CFD Porous Media Approach Based on Mixture Model and a Void Fraction Correlation

Being able to predict the void fraction is essential for a numerical prediction of the thermohydraulic behaviour in steam generators. Indeed, it determines two-phase mixture density and affects two-phase mixture velocity which enable to evaluate the pressure drop of heat exchanger, the mass transfer...

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Autores principales:	Dubot Claire, Melot Vincent, Béghein Claudine, Allery Cyrille, Bonneau Clément
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	steam generator void fraction mixture model porous media approach Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/1045644aa5aa4d63ad6295c0dc4b277a
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id	oai:doaj.org-article:1045644aa5aa4d63ad6295c0dc4b277a
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spelling	oai:doaj.org-article:1045644aa5aa4d63ad6295c0dc4b277a2021-11-12T11:44:33ZNumerical Prediction of Two-Phase Flow in Tube Bundles with a CFD Porous Media Approach Based on Mixture Model and a Void Fraction Correlation2267-124210.1051/e3sconf/202132101002https://doaj.org/article/1045644aa5aa4d63ad6295c0dc4b277a2021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/97/e3sconf_icchmt2021_01002.pdfhttps://doaj.org/toc/2267-1242Being able to predict the void fraction is essential for a numerical prediction of the thermohydraulic behaviour in steam generators. Indeed, it determines two-phase mixture density and affects two-phase mixture velocity which enable to evaluate the pressure drop of heat exchanger, the mass transfer and heat transfer coefficients. In this study, the flow is modelled by coupling Ansys Fluent with an in-house code library where a CFD porous media approach is implemented. In this code, the two-phase flow has been modelled so far using the Eulerian model. However, this two-phase model requires interaction laws between phases which are not known and/or reliable for a flow within a tube bundle. The aim of this paper is to use the mixture model, for which it is easier to implement suitable correlations for tube bundles. By expressing the relative velocity, as a function of slip, the void fraction model of Feenstra et al. developed for upward cross-flow through horizontal tube bundles is introduced. With this method, physical phenomena that occur in tube bundles are taken into consideration in the mixture model. The developed approach is validated based on the experimental results obtained by Dowlati et al.Dubot ClaireMelot VincentBéghein ClaudineAllery CyrilleBonneau ClémentEDP Sciencesarticlesteam generatorvoid fractionmixture modelporous media approachEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 321, p 01002 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	steam generator void fraction mixture model porous media approach Environmental sciences GE1-350
spellingShingle	steam generator void fraction mixture model porous media approach Environmental sciences GE1-350 Dubot Claire Melot Vincent Béghein Claudine Allery Cyrille Bonneau Clément Numerical Prediction of Two-Phase Flow in Tube Bundles with a CFD Porous Media Approach Based on Mixture Model and a Void Fraction Correlation
description	Being able to predict the void fraction is essential for a numerical prediction of the thermohydraulic behaviour in steam generators. Indeed, it determines two-phase mixture density and affects two-phase mixture velocity which enable to evaluate the pressure drop of heat exchanger, the mass transfer and heat transfer coefficients. In this study, the flow is modelled by coupling Ansys Fluent with an in-house code library where a CFD porous media approach is implemented. In this code, the two-phase flow has been modelled so far using the Eulerian model. However, this two-phase model requires interaction laws between phases which are not known and/or reliable for a flow within a tube bundle. The aim of this paper is to use the mixture model, for which it is easier to implement suitable correlations for tube bundles. By expressing the relative velocity, as a function of slip, the void fraction model of Feenstra et al. developed for upward cross-flow through horizontal tube bundles is introduced. With this method, physical phenomena that occur in tube bundles are taken into consideration in the mixture model. The developed approach is validated based on the experimental results obtained by Dowlati et al.
format	article
author	Dubot Claire Melot Vincent Béghein Claudine Allery Cyrille Bonneau Clément
author_facet	Dubot Claire Melot Vincent Béghein Claudine Allery Cyrille Bonneau Clément
author_sort	Dubot Claire
title	Numerical Prediction of Two-Phase Flow in Tube Bundles with a CFD Porous Media Approach Based on Mixture Model and a Void Fraction Correlation
title_short	Numerical Prediction of Two-Phase Flow in Tube Bundles with a CFD Porous Media Approach Based on Mixture Model and a Void Fraction Correlation
title_full	Numerical Prediction of Two-Phase Flow in Tube Bundles with a CFD Porous Media Approach Based on Mixture Model and a Void Fraction Correlation
title_fullStr	Numerical Prediction of Two-Phase Flow in Tube Bundles with a CFD Porous Media Approach Based on Mixture Model and a Void Fraction Correlation
title_full_unstemmed	Numerical Prediction of Two-Phase Flow in Tube Bundles with a CFD Porous Media Approach Based on Mixture Model and a Void Fraction Correlation
title_sort	numerical prediction of two-phase flow in tube bundles with a cfd porous media approach based on mixture model and a void fraction correlation
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/1045644aa5aa4d63ad6295c0dc4b277a
work_keys_str_mv	AT dubotclaire numericalpredictionoftwophaseflowintubebundleswithacfdporousmediaapproachbasedonmixturemodelandavoidfractioncorrelation AT melotvincent numericalpredictionoftwophaseflowintubebundleswithacfdporousmediaapproachbasedonmixturemodelandavoidfractioncorrelation AT begheinclaudine numericalpredictionoftwophaseflowintubebundleswithacfdporousmediaapproachbasedonmixturemodelandavoidfractioncorrelation AT allerycyrille numericalpredictionoftwophaseflowintubebundleswithacfdporousmediaapproachbasedonmixturemodelandavoidfractioncorrelation AT bonneauclement numericalpredictionoftwophaseflowintubebundleswithacfdporousmediaapproachbasedonmixturemodelandavoidfractioncorrelation
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Numerical Prediction of Two-Phase Flow in Tube Bundles with a CFD Porous Media Approach Based on Mixture Model and a Void Fraction Correlation

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