Applicability of a mechanistic numerical method for sodium-water reaction phenomena in steam generators of sodium-cooled fast reactors

When pressurized water or vapor leaks from a failed heat transfer tube in a steam generator of sodium-cooled fast reactors, a high-velocity, high-temperature jet with sodium-water chemical reaction may cause wastage on the adjacent tubes. For assessment of the wastage environment, a mechanistic comp...

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Autores principales:	Akihiro UCHIBORI, Hiroyuki OHSHIMA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	sodium cooled fast reactor steam generator sodium water reaction failure propagation mechanistic numerical method Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/9109f0866cfe439cb9c972b602f19a36
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spelling	oai:doaj.org-article:9109f0866cfe439cb9c972b602f19a362021-11-26T06:51:31ZApplicability of a mechanistic numerical method for sodium-water reaction phenomena in steam generators of sodium-cooled fast reactors2187-974510.1299/mej.15-00620https://doaj.org/article/9109f0866cfe439cb9c972b602f19a362016-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/3/3_15-00620/_pdf/-char/enhttps://doaj.org/toc/2187-9745When pressurized water or vapor leaks from a failed heat transfer tube in a steam generator of sodium-cooled fast reactors, a high-velocity, high-temperature jet with sodium-water chemical reaction may cause wastage on the adjacent tubes. For assessment of the wastage environment, a mechanistic computer code called SERAPHIM calculating compressible multicomponent multiphase flow with sodium-water chemical reaction has been developed. In this study, applicability of the SERAPHIM code was investigated through the analysis of the experiment on water vapor discharging in liquid sodium under actual condition of the steam generator. The computational domain consists of the cylindrical vessel and the simulated two horizontal heat transfer tubes. The cylindrical vessel was initially filled with liquid sodium. Pressurized water vapor goes into the sodium pool vertically upward from the discharging nozzle located at the center of one of the two tubes. The numerical result showed that the underexpanded jet appeared and impinged on the target tube located above the discharging tube. The calculated temperature distribution agreed with the measurement result well. The liquid droplet entrainment and its transport were considered in this analysis. The region with higher impingement velocity of the liquid droplet was close to the wastage region confirmed in the experiment.Akihiro UCHIBORIHiroyuki OHSHIMAThe Japan Society of Mechanical Engineersarticlesodium cooled fast reactorsteam generatorsodium water reactionfailure propagationmechanistic numerical methodMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 3, Pp 15-00620-15-00620 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	sodium cooled fast reactor steam generator sodium water reaction failure propagation mechanistic numerical method Mechanical engineering and machinery TJ1-1570
spellingShingle	sodium cooled fast reactor steam generator sodium water reaction failure propagation mechanistic numerical method Mechanical engineering and machinery TJ1-1570 Akihiro UCHIBORI Hiroyuki OHSHIMA Applicability of a mechanistic numerical method for sodium-water reaction phenomena in steam generators of sodium-cooled fast reactors
description	When pressurized water or vapor leaks from a failed heat transfer tube in a steam generator of sodium-cooled fast reactors, a high-velocity, high-temperature jet with sodium-water chemical reaction may cause wastage on the adjacent tubes. For assessment of the wastage environment, a mechanistic computer code called SERAPHIM calculating compressible multicomponent multiphase flow with sodium-water chemical reaction has been developed. In this study, applicability of the SERAPHIM code was investigated through the analysis of the experiment on water vapor discharging in liquid sodium under actual condition of the steam generator. The computational domain consists of the cylindrical vessel and the simulated two horizontal heat transfer tubes. The cylindrical vessel was initially filled with liquid sodium. Pressurized water vapor goes into the sodium pool vertically upward from the discharging nozzle located at the center of one of the two tubes. The numerical result showed that the underexpanded jet appeared and impinged on the target tube located above the discharging tube. The calculated temperature distribution agreed with the measurement result well. The liquid droplet entrainment and its transport were considered in this analysis. The region with higher impingement velocity of the liquid droplet was close to the wastage region confirmed in the experiment.
format	article
author	Akihiro UCHIBORI Hiroyuki OHSHIMA
author_facet	Akihiro UCHIBORI Hiroyuki OHSHIMA
author_sort	Akihiro UCHIBORI
title	Applicability of a mechanistic numerical method for sodium-water reaction phenomena in steam generators of sodium-cooled fast reactors
title_short	Applicability of a mechanistic numerical method for sodium-water reaction phenomena in steam generators of sodium-cooled fast reactors
title_full	Applicability of a mechanistic numerical method for sodium-water reaction phenomena in steam generators of sodium-cooled fast reactors
title_fullStr	Applicability of a mechanistic numerical method for sodium-water reaction phenomena in steam generators of sodium-cooled fast reactors
title_full_unstemmed	Applicability of a mechanistic numerical method for sodium-water reaction phenomena in steam generators of sodium-cooled fast reactors
title_sort	applicability of a mechanistic numerical method for sodium-water reaction phenomena in steam generators of sodium-cooled fast reactors
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/9109f0866cfe439cb9c972b602f19a36
work_keys_str_mv	AT akihirouchibori applicabilityofamechanisticnumericalmethodforsodiumwaterreactionphenomenainsteamgeneratorsofsodiumcooledfastreactors AT hiroyukiohshima applicabilityofamechanisticnumericalmethodforsodiumwaterreactionphenomenainsteamgeneratorsofsodiumcooledfastreactors
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Applicability of a mechanistic numerical method for sodium-water reaction phenomena in steam generators of sodium-cooled fast reactors

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