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Interaction of a droplet spray with a turbulent plane air jet impacting a wall: Application to the confinement of atmospheres contaminated with particles by air curtain

Experiments are carried out to study the interaction of a spray of spherical micronic oil droplets with a turbulent plane air jet impacting a wall. The context is the separation of a contaminated atmosphere with passive particles from a clean atmosphere by using a dynamical air curtain. A spinning d...

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Detalles Bibliográficos
Autores principales: Ikardouchene, Syphax, Delaby, Stéphane, Nicolas, Xavier
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9942658/
https://www.ncbi.nlm.nih.gov/pubmed/36844891
http://dx.doi.org/10.1007/s00348-023-03585-z
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author Ikardouchene, Syphax
Delaby, Stéphane
Nicolas, Xavier
author_facet Ikardouchene, Syphax
Delaby, Stéphane
Nicolas, Xavier
author_sort Ikardouchene, Syphax
collection PubMed
description Experiments are carried out to study the interaction of a spray of spherical micronic oil droplets with a turbulent plane air jet impacting a wall. The context is the separation of a contaminated atmosphere with passive particles from a clean atmosphere by using a dynamical air curtain. A spinning disk is used to produce the spray of oil droplets close to the air jet. The diameter of the produced droplets varies between 0.3 and [Formula: see text] m. The jet and particulate Reynolds numbers and the jet and Kolmogorov–Stokes numbers are, respectively, equal to Re[Formula: see text] , [Formula: see text] , [Formula: see text] and [Formula: see text] . The ratio of the jet height to nozzle width is [Formula: see text] . The flow properties in the experiments are measured by particle image velocimetry and are in good agreement with large eddy simulation results. The droplet/particle passing rate (PPR) through the air jet is measured by an optical particle counter. The PPR decreases with the increase in the droplet diameter for the studied droplet size range. Whatever the droplet size is, the PPR increases with time due to the presence of two large vortices on each side of the air jet that bring the droplets back to the jet. The accuracy and repeatability of the measurements are verified. The present results can be used to validate Eulerian/Lagrangian numerical simulations on the interaction of micronic droplets with a turbulent air jet.
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spelling pubmed-99426582023-02-22 Interaction of a droplet spray with a turbulent plane air jet impacting a wall: Application to the confinement of atmospheres contaminated with particles by air curtain Ikardouchene, Syphax Delaby, Stéphane Nicolas, Xavier Exp Fluids Research Article Experiments are carried out to study the interaction of a spray of spherical micronic oil droplets with a turbulent plane air jet impacting a wall. The context is the separation of a contaminated atmosphere with passive particles from a clean atmosphere by using a dynamical air curtain. A spinning disk is used to produce the spray of oil droplets close to the air jet. The diameter of the produced droplets varies between 0.3 and [Formula: see text] m. The jet and particulate Reynolds numbers and the jet and Kolmogorov–Stokes numbers are, respectively, equal to Re[Formula: see text] , [Formula: see text] , [Formula: see text] and [Formula: see text] . The ratio of the jet height to nozzle width is [Formula: see text] . The flow properties in the experiments are measured by particle image velocimetry and are in good agreement with large eddy simulation results. The droplet/particle passing rate (PPR) through the air jet is measured by an optical particle counter. The PPR decreases with the increase in the droplet diameter for the studied droplet size range. Whatever the droplet size is, the PPR increases with time due to the presence of two large vortices on each side of the air jet that bring the droplets back to the jet. The accuracy and repeatability of the measurements are verified. The present results can be used to validate Eulerian/Lagrangian numerical simulations on the interaction of micronic droplets with a turbulent air jet. Springer Berlin Heidelberg 2023-02-21 2023 /pmc/articles/PMC9942658/ /pubmed/36844891 http://dx.doi.org/10.1007/s00348-023-03585-z Text en © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023, Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.
spellingShingle Research Article
Ikardouchene, Syphax
Delaby, Stéphane
Nicolas, Xavier
Interaction of a droplet spray with a turbulent plane air jet impacting a wall: Application to the confinement of atmospheres contaminated with particles by air curtain
title Interaction of a droplet spray with a turbulent plane air jet impacting a wall: Application to the confinement of atmospheres contaminated with particles by air curtain
title_full Interaction of a droplet spray with a turbulent plane air jet impacting a wall: Application to the confinement of atmospheres contaminated with particles by air curtain
title_fullStr Interaction of a droplet spray with a turbulent plane air jet impacting a wall: Application to the confinement of atmospheres contaminated with particles by air curtain
title_full_unstemmed Interaction of a droplet spray with a turbulent plane air jet impacting a wall: Application to the confinement of atmospheres contaminated with particles by air curtain
title_short Interaction of a droplet spray with a turbulent plane air jet impacting a wall: Application to the confinement of atmospheres contaminated with particles by air curtain
title_sort interaction of a droplet spray with a turbulent plane air jet impacting a wall: application to the confinement of atmospheres contaminated with particles by air curtain
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9942658/
https://www.ncbi.nlm.nih.gov/pubmed/36844891
http://dx.doi.org/10.1007/s00348-023-03585-z
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