Modelling of compressible gas–liquid flow in a convergent–divergent nozzle

Pougatch, Konstantin; Salcudean, M.; Chan, Edward; Knapper, Brian

doi:10.1016/j.ces.2008.05.027

Cited by 25 publications

(23 citation statements)

References 36 publications

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“…The wall functions, which were modified for two-phase flow by Pougatch et al (2008), are used to determine the values for the turbulent kinetic energy and its dissipation near the wall. The values in the cell centre adjacent to the wall are:…”

Section: Interfacial and Boundary Conditionsmentioning

confidence: 99%

“…Pougatch et al (2008) modification of Laurien and Niemann (2004) polynomial correlation is adopted for use with the model.…”

Section: Interfacial Forcesmentioning

confidence: 99%

“…However, in the gas-assisted premixed atomization the solution for the compressible high gas volume fraction flow is non-trivial. Recently, Pougatch et al (2008) developed the twofluid gas-compressible model for the nozzle flow. The model assumes a monodispersed distribution of the bubbles that is determined by solving a particle number density equation including break-up and coalescence terms.…”

Section: Introductionmentioning

confidence: 99%

“…This model is based on the nozzle flow model developed previously by Pougatch et al (2008). A single set of the flow and turbulence equations is solved throughout the whole modelling domain; however, some closure relationships are different depending on which of the phases is continuous in the flow region.…”

Section: Introductionmentioning

confidence: 99%

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A two-fluid model of gas-assisted atomization including flow through the nozzle, phase inversion, and spray dispersion

Pougatch

Salcudean

Chan

et al. 2009

International Journal of Multiphase Flow

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Section: Interfacial and Boundary Conditionsmentioning

confidence: 99%

“…Pougatch et al (2008) modification of Laurien and Niemann (2004) polynomial correlation is adopted for use with the model.…”

Section: Interfacial Forcesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A two-fluid model of gas-assisted atomization including flow through the nozzle, phase inversion, and spray dispersion

Pougatch

Salcudean

Chan

et al. 2009

International Journal of Multiphase Flow

Self Cite

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“…In this respect, the convergent divergent nozzle can be considered the nearest geometry to the SRV. Pougatch 8 developed a two-fluid model to predict a high volume fraction water-air flow in a convergent divergent nozzle. The two-fluid Eulerian-Eulerian model with the standard k-e turbulence model showed good agreement with the experimental results.…”

Section: Introductionmentioning

confidence: 99%

Prediction of two-phase flow through a safety relief valve

Elmayyah¹,

Dempster²

2012

Proceedings of the Institution of Mechanical Engineers, Part E:

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This version is available at https://strathprints.strath.ac.uk/42272/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Abstract Safety relief valves are necessary elements in any pressurised system. The flow inside the safety relief valve shows a number of interesting, yet complicated, features especially when a two-phase flow is involved. Consequently, developing an efficient and accurate means for predicting the safety relief valve performance and understanding the flow physics is a demanding objective. In this article, the ability of a two-phase mixture model to predict the critical flows of air and water through a safety valve is examined. An industrial refrigeration safety relief valve of ¼'' inlet bore size has been tested experimentally over a pressure range of 6-15 barg and air mass qualities from 0.23 to 1 when discharging to near atmospheric conditions for a range of valve lift positions. A two-dimensional mixture model consisting of mixture mass, momentum and energy equations, combined with a liquid mass equation and the standard k-e turbulence model for mixture turbulent transport has been used to predict the two-phase flows though the valve. The mixture model results have been compared with the homogenous equilibrium model and the homogenous non-equilibrium model adopted by the ISO standard. It has been shown that the mixture model can be used satisfactorily to predict the mass flows for the above conditions. Overall, the accuracy of the two-phase air mass flow for given inlet liquid flow rates can be predicted to within 15%.

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Numerical simulation of liquid spray dispersion in a fluidized bed

Pougatch

Salcudean

2010

Can J Chem Eng

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A numerical model that simulates liquid spray dispersion in the fluidized bed of solid particles is presented. The model includes flow through the atomization device (nozzle), phase inversion and formation of the spray, its interaction with the solid particles, and liquid propagation within the bed. All these processes are modelled simultaneously to reflect the couplings existing between them. The model utilises a Eulerian description for all three phases to allow for the continuous computations throughout the whole domain. The comparison with experimental data reveals reasonably good agreement between the predicted and measured liquid to solid mass ratio distributions. Un modèle numérique qui simule la vaporization de liquide dans le lit fluidisé de particules solides est présenté. Ce modèle comprend la circulation dans l'appareil de pulvérization (buse), l'inversion de phase et la formation de la vaporization, son interaction avec les particules solides et la propagation liquide dans le lit. Tous ces procédés sont modelés de manière simultanée pour refléter les associations qui existent entre eux. Le modèle utilise une description eulérienne pour les trois phases afin de permettre les calculs continus dans l'ensemble du domaine. La comparaison avec les données expérimentales révèle que les distributions de rapport de masse liquideà solide prévues et mesurées sont raisonnablement en accord.

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Modelling of compressible gas–liquid flow in a convergent–divergent nozzle

Cited by 25 publications

References 36 publications

A two-fluid model of gas-assisted atomization including flow through the nozzle, phase inversion, and spray dispersion

A two-fluid model of gas-assisted atomization including flow through the nozzle, phase inversion, and spray dispersion

Prediction of two-phase flow through a safety relief valve

Numerical simulation of liquid spray dispersion in a fluidized bed

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