Initially sub-cooled liquid flashing flow CFD modeling: closure parameters for a non-symmetric interfacial area density formulation

A bubble to droplet transition non-symmetric interfacial area density formulation was developed for flash boiling nozzles CFD modeling. This formulation is used in a two fluid Euler- Euler modeling with a thermal phase change model. The regime transition formulation is based on the number of bubbles...

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Autores principales:	Ortego Sampedro Egoi, Nemer Maroun
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/969054466bab4971aee47e14c49c9d6f
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id	oai:doaj.org-article:969054466bab4971aee47e14c49c9d6f
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spelling	oai:doaj.org-article:969054466bab4971aee47e14c49c9d6f2021-11-12T11:44:34ZInitially sub-cooled liquid flashing flow CFD modeling: closure parameters for a non-symmetric interfacial area density formulation2267-124210.1051/e3sconf/202132103010https://doaj.org/article/969054466bab4971aee47e14c49c9d6f2021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/97/e3sconf_icchmt2021_03010.pdfhttps://doaj.org/toc/2267-1242A bubble to droplet transition non-symmetric interfacial area density formulation was developed for flash boiling nozzles CFD modeling. This formulation is used in a two fluid Euler- Euler modeling with a thermal phase change model. The regime transition formulation is based on the number of bubbles density and number of droplet density values. The first affects mainly the flow regime close to the nozzle throat and the second parameter affects mainly the flow close to the outlet. The physical factors affecting the calibration values of these parameters are analyzed in this paper with the aim of defining appropriate closure models. The analysis is done using experimental data available in literature. The comparison is done on the mass flow rate and the nozzle outlet velocity. It appears that the number of bubbles density is related to the inlet sub -cooling conditions and that the number of droplets density is affected by the outlet pressure and Reynolds number.Ortego Sampedro EgoiNemer MarounEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 321, p 03010 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Ortego Sampedro Egoi Nemer Maroun Initially sub-cooled liquid flashing flow CFD modeling: closure parameters for a non-symmetric interfacial area density formulation
description	A bubble to droplet transition non-symmetric interfacial area density formulation was developed for flash boiling nozzles CFD modeling. This formulation is used in a two fluid Euler- Euler modeling with a thermal phase change model. The regime transition formulation is based on the number of bubbles density and number of droplet density values. The first affects mainly the flow regime close to the nozzle throat and the second parameter affects mainly the flow close to the outlet. The physical factors affecting the calibration values of these parameters are analyzed in this paper with the aim of defining appropriate closure models. The analysis is done using experimental data available in literature. The comparison is done on the mass flow rate and the nozzle outlet velocity. It appears that the number of bubbles density is related to the inlet sub -cooling conditions and that the number of droplets density is affected by the outlet pressure and Reynolds number.
format	article
author	Ortego Sampedro Egoi Nemer Maroun
author_facet	Ortego Sampedro Egoi Nemer Maroun
author_sort	Ortego Sampedro Egoi
title	Initially sub-cooled liquid flashing flow CFD modeling: closure parameters for a non-symmetric interfacial area density formulation
title_short	Initially sub-cooled liquid flashing flow CFD modeling: closure parameters for a non-symmetric interfacial area density formulation
title_full	Initially sub-cooled liquid flashing flow CFD modeling: closure parameters for a non-symmetric interfacial area density formulation
title_fullStr	Initially sub-cooled liquid flashing flow CFD modeling: closure parameters for a non-symmetric interfacial area density formulation
title_full_unstemmed	Initially sub-cooled liquid flashing flow CFD modeling: closure parameters for a non-symmetric interfacial area density formulation
title_sort	initially sub-cooled liquid flashing flow cfd modeling: closure parameters for a non-symmetric interfacial area density formulation
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/969054466bab4971aee47e14c49c9d6f
work_keys_str_mv	AT ortegosampedroegoi initiallysubcooledliquidflashingflowcfdmodelingclosureparametersforanonsymmetricinterfacialareadensityformulation AT nemermaroun initiallysubcooledliquidflashingflowcfdmodelingclosureparametersforanonsymmetricinterfacialareadensityformulation
_version_	1718430565820006400

Initially sub-cooled liquid flashing flow CFD modeling: closure parameters for a non-symmetric interfacial area density formulation

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