Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models

Autores
Pilkhwal, D. S.; Ambrosini, W.; Forgione, N.; Vijayan, P. K.; Saha, D.; Ferreri, Juan Carlos
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper discusses the results obtained using one-dimensional and three-dimensional computational fluid-dynamic codes for the prediction of the dynamic behaviour observed in experiments carried out in a single-phase natural circulation apparatus. The loop is made of glass and is equipped with vertical and horizontal heaters and coolers that can be separately operated, thus obtaining different working configurations. An in-house program, capable of linear and non-linear stability analysis of one-dimensional loops, with arbitrary configurations of heat sources and sinks, and a transient thermal–hydraulics system code were adopted for the purpose of highlighting capabilities and limitations of one-dimensional models in predicting the involved phenomena. Both linear stability maps and transient flow evolutions have been calculated by the programs, obtaining information on both the linear and the non-linear dynamic behaviour of the addressed system, as predicted by one-dimensional, cross-section averaged balance equations. A computational fluid-dynamics code has been also adopted for simulating the system dynamics in the different loop configurations. In particular, the CFD code was effective in showing the origin of pulsating instabilities observed with horizontal heater and cooler, which could in no way be predicted by the one-dimensional models.
Fil: Pilkhwal, D. S.. Bhabha Atomic Research Centre; India
Fil: Ambrosini, W.. Università degli Studi di Pisa; Italia
Fil: Forgione, N.. Università degli Studi di Pisa; Italia
Fil: Vijayan, P. K.. Bhabha Atomic Research Centre; India
Fil: Saha, D.. Bhabha Atomic Research Centre; India
Fil: Ferreri, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
CFD
COMPUTATIONAL FLUID-DYNAMICS
HHHC
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/248324
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic modelsPilkhwal, D. S.Ambrosini, W.Forgione, N.Vijayan, P. K.Saha, D.Ferreri, Juan CarlosCFDCOMPUTATIONAL FLUID-DYNAMICSHHHChttps://purl.org/becyt/ford/2.3https://purl.org/becyt/ford/2This paper discusses the results obtained using one-dimensional and three-dimensional computational fluid-dynamic codes for the prediction of the dynamic behaviour observed in experiments carried out in a single-phase natural circulation apparatus. The loop is made of glass and is equipped with vertical and horizontal heaters and coolers that can be separately operated, thus obtaining different working configurations. An in-house program, capable of linear and non-linear stability analysis of one-dimensional loops, with arbitrary configurations of heat sources and sinks, and a transient thermal–hydraulics system code were adopted for the purpose of highlighting capabilities and limitations of one-dimensional models in predicting the involved phenomena. Both linear stability maps and transient flow evolutions have been calculated by the programs, obtaining information on both the linear and the non-linear dynamic behaviour of the addressed system, as predicted by one-dimensional, cross-section averaged balance equations. A computational fluid-dynamics code has been also adopted for simulating the system dynamics in the different loop configurations. In particular, the CFD code was effective in showing the origin of pulsating instabilities observed with horizontal heater and cooler, which could in no way be predicted by the one-dimensional models.Fil: Pilkhwal, D. S.. Bhabha Atomic Research Centre; IndiaFil: Ambrosini, W.. Università degli Studi di Pisa; ItaliaFil: Forgione, N.. Università degli Studi di Pisa; ItaliaFil: Vijayan, P. K.. Bhabha Atomic Research Centre; IndiaFil: Saha, D.. Bhabha Atomic Research Centre; IndiaFil: Ferreri, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaPergamon-Elsevier Science Ltd2007-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/248324Pilkhwal, D. S.; Ambrosini, W.; Forgione, N.; Vijayan, P. K.; Saha, D.; et al.; Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models; Pergamon-Elsevier Science Ltd; Annals of Nuclear Energy; 34; 5; 5-2007; 339-3550306-4549CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0306454907000345info:eu-repo/semantics/altIdentifier/doi/10.1016/j.anucene.2007.01.012info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:05:16Zoai:ri.conicet.gov.ar:11336/248324instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:05:17.137CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models
title Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models
spellingShingle Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models
Pilkhwal, D. S.
CFD
COMPUTATIONAL FLUID-DYNAMICS
HHHC
title_short Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models
title_full Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models
title_fullStr Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models
title_full_unstemmed Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models
title_sort Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models
dc.creator.none.fl_str_mv Pilkhwal, D. S.
Ambrosini, W.
Forgione, N.
Vijayan, P. K.
Saha, D.
Ferreri, Juan Carlos
author Pilkhwal, D. S.
author_facet Pilkhwal, D. S.
Ambrosini, W.
Forgione, N.
Vijayan, P. K.
Saha, D.
Ferreri, Juan Carlos
author_role author
author2 Ambrosini, W.
Forgione, N.
Vijayan, P. K.
Saha, D.
Ferreri, Juan Carlos
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv CFD
COMPUTATIONAL FLUID-DYNAMICS
HHHC
topic CFD
COMPUTATIONAL FLUID-DYNAMICS
HHHC
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.3
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv This paper discusses the results obtained using one-dimensional and three-dimensional computational fluid-dynamic codes for the prediction of the dynamic behaviour observed in experiments carried out in a single-phase natural circulation apparatus. The loop is made of glass and is equipped with vertical and horizontal heaters and coolers that can be separately operated, thus obtaining different working configurations. An in-house program, capable of linear and non-linear stability analysis of one-dimensional loops, with arbitrary configurations of heat sources and sinks, and a transient thermal–hydraulics system code were adopted for the purpose of highlighting capabilities and limitations of one-dimensional models in predicting the involved phenomena. Both linear stability maps and transient flow evolutions have been calculated by the programs, obtaining information on both the linear and the non-linear dynamic behaviour of the addressed system, as predicted by one-dimensional, cross-section averaged balance equations. A computational fluid-dynamics code has been also adopted for simulating the system dynamics in the different loop configurations. In particular, the CFD code was effective in showing the origin of pulsating instabilities observed with horizontal heater and cooler, which could in no way be predicted by the one-dimensional models.
Fil: Pilkhwal, D. S.. Bhabha Atomic Research Centre; India
Fil: Ambrosini, W.. Università degli Studi di Pisa; Italia
Fil: Forgione, N.. Università degli Studi di Pisa; Italia
Fil: Vijayan, P. K.. Bhabha Atomic Research Centre; India
Fil: Saha, D.. Bhabha Atomic Research Centre; India
Fil: Ferreri, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description This paper discusses the results obtained using one-dimensional and three-dimensional computational fluid-dynamic codes for the prediction of the dynamic behaviour observed in experiments carried out in a single-phase natural circulation apparatus. The loop is made of glass and is equipped with vertical and horizontal heaters and coolers that can be separately operated, thus obtaining different working configurations. An in-house program, capable of linear and non-linear stability analysis of one-dimensional loops, with arbitrary configurations of heat sources and sinks, and a transient thermal–hydraulics system code were adopted for the purpose of highlighting capabilities and limitations of one-dimensional models in predicting the involved phenomena. Both linear stability maps and transient flow evolutions have been calculated by the programs, obtaining information on both the linear and the non-linear dynamic behaviour of the addressed system, as predicted by one-dimensional, cross-section averaged balance equations. A computational fluid-dynamics code has been also adopted for simulating the system dynamics in the different loop configurations. In particular, the CFD code was effective in showing the origin of pulsating instabilities observed with horizontal heater and cooler, which could in no way be predicted by the one-dimensional models.
publishDate 2007
dc.date.none.fl_str_mv 2007-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/248324
Pilkhwal, D. S.; Ambrosini, W.; Forgione, N.; Vijayan, P. K.; Saha, D.; et al.; Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models; Pergamon-Elsevier Science Ltd; Annals of Nuclear Energy; 34; 5; 5-2007; 339-355
0306-4549
CONICET Digital
CONICET
url http://hdl.handle.net/11336/248324
identifier_str_mv Pilkhwal, D. S.; Ambrosini, W.; Forgione, N.; Vijayan, P. K.; Saha, D.; et al.; Analysis of the unstable behaviour of a single-phase natural circulation loop with one-dimensional and computational fluid-dynamic models; Pergamon-Elsevier Science Ltd; Annals of Nuclear Energy; 34; 5; 5-2007; 339-355
0306-4549
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0306454907000345
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.anucene.2007.01.012
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842980189817012224
score 12.993085

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