$Void fraction distribution in a rod bundle with part-length rods via high-energy X-ray computed tomography$
Código QR

Void fraction distribution in a rod bundle with part-length rods via high-energy X-ray computed tomography

The void fraction distribution of a fuel rod bundle in a boiling water reactor is a critical parameter for accurately predicting the optimal thermal margin in the design of a reactor core. The rod bundle configuration, such as a part-length rod (PLR) and water rod, can affect void distribution. To c...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Takahiro ARAI, Atsushi UI, Masahiro FURUYA, Riichiro OKAWA, Tsugumasa IIYAMA, Shota UEDA, Kenetsu SHIRAKAWA, Kazuaki KITO
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2021
Materias:	5 × 5 rod bundle void fraction distribution boiling two-phase flow linear accelerator-driven high-energy x-ray computed tomography part-length rod Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/06c6b44fd39c42b1aeae9ba64afff1dc
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:06c6b44fd39c42b1aeae9ba64afff1dc
record_format	dspace
spelling	oai:doaj.org-article:06c6b44fd39c42b1aeae9ba64afff1dc2021-11-29T06:09:58ZVoid fraction distribution in a rod bundle with part-length rods via high-energy X-ray computed tomography2187-974510.1299/mej.21-00001https://doaj.org/article/06c6b44fd39c42b1aeae9ba64afff1dc2021-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/8/4/8_21-00001/_pdf/-char/enhttps://doaj.org/toc/2187-9745The void fraction distribution of a fuel rod bundle in a boiling water reactor is a critical parameter for accurately predicting the optimal thermal margin in the design of a reactor core. The rod bundle configuration, such as a part-length rod (PLR) and water rod, can affect void distribution. To clarify the influence of PLR on void fraction distribution, a boiling flow experiment was conducted using a 5 × 5 heated rod bundle that partially simulated a boiling water reactor (BWR) rod bundle, and three PLRs were arranged in the corner. The cross-sectional void fraction distribution was acquired using high-energy X-ray computed tomography at six height levels for wide flow conditions, system pressures of 0.1 − 7.2 MPa, inlet subcoolings of 20 - 90 kJ/kg, mass fluxes of 500 - 1250 kg/m2/s, and linear heat generation rates (LHGR) of 3.2 - 8.6 kW/m. In the PLR region, the local void fraction temporarily decreases because the PLRs disappear, and the flow channel rapidly expands. Together with the downstream PLRs, the voids propagate to the PLR region and concentrate in the center. The void fraction in the corner of the PLR region remains lower. A maximum 26% decrease in the subchannel void fraction was observed in the corner of the PLR region at the system pressure of 7.2 MPa, mass flux of 1.25 × 103 kg/m2/s, inlet subcooling of 50 kJ/kg, and LHGR of 8.6 kW/m.Takahiro ARAIAtsushi UIMasahiro FURUYARiichiro OKAWATsugumasa IIYAMAShota UEDAKenetsu SHIRAKAWAKazuaki KITOThe Japan Society of Mechanical Engineersarticle5 × 5 rod bundlevoid fraction distributionboiling two-phase flowlinear accelerator-driven high-energy x-ray computed tomographypart-length rodMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 8, Iss 4, Pp 21-00001-21-00001 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	5 × 5 rod bundle void fraction distribution boiling two-phase flow linear accelerator-driven high-energy x-ray computed tomography part-length rod Mechanical engineering and machinery TJ1-1570
spellingShingle	5 × 5 rod bundle void fraction distribution boiling two-phase flow linear accelerator-driven high-energy x-ray computed tomography part-length rod Mechanical engineering and machinery TJ1-1570 Takahiro ARAI Atsushi UI Masahiro FURUYA Riichiro OKAWA Tsugumasa IIYAMA Shota UEDA Kenetsu SHIRAKAWA Kazuaki KITO Void fraction distribution in a rod bundle with part-length rods via high-energy X-ray computed tomography
description	The void fraction distribution of a fuel rod bundle in a boiling water reactor is a critical parameter for accurately predicting the optimal thermal margin in the design of a reactor core. The rod bundle configuration, such as a part-length rod (PLR) and water rod, can affect void distribution. To clarify the influence of PLR on void fraction distribution, a boiling flow experiment was conducted using a 5 × 5 heated rod bundle that partially simulated a boiling water reactor (BWR) rod bundle, and three PLRs were arranged in the corner. The cross-sectional void fraction distribution was acquired using high-energy X-ray computed tomography at six height levels for wide flow conditions, system pressures of 0.1 − 7.2 MPa, inlet subcoolings of 20 - 90 kJ/kg, mass fluxes of 500 - 1250 kg/m2/s, and linear heat generation rates (LHGR) of 3.2 - 8.6 kW/m. In the PLR region, the local void fraction temporarily decreases because the PLRs disappear, and the flow channel rapidly expands. Together with the downstream PLRs, the voids propagate to the PLR region and concentrate in the center. The void fraction in the corner of the PLR region remains lower. A maximum 26% decrease in the subchannel void fraction was observed in the corner of the PLR region at the system pressure of 7.2 MPa, mass flux of 1.25 × 103 kg/m2/s, inlet subcooling of 50 kJ/kg, and LHGR of 8.6 kW/m.
format	article
author	Takahiro ARAI Atsushi UI Masahiro FURUYA Riichiro OKAWA Tsugumasa IIYAMA Shota UEDA Kenetsu SHIRAKAWA Kazuaki KITO
author_facet	Takahiro ARAI Atsushi UI Masahiro FURUYA Riichiro OKAWA Tsugumasa IIYAMA Shota UEDA Kenetsu SHIRAKAWA Kazuaki KITO
author_sort	Takahiro ARAI
title	Void fraction distribution in a rod bundle with part-length rods via high-energy X-ray computed tomography
title_short	Void fraction distribution in a rod bundle with part-length rods via high-energy X-ray computed tomography
title_full	Void fraction distribution in a rod bundle with part-length rods via high-energy X-ray computed tomography
title_fullStr	Void fraction distribution in a rod bundle with part-length rods via high-energy X-ray computed tomography
title_full_unstemmed	Void fraction distribution in a rod bundle with part-length rods via high-energy X-ray computed tomography
title_sort	void fraction distribution in a rod bundle with part-length rods via high-energy x-ray computed tomography
publisher	The Japan Society of Mechanical Engineers
publishDate	2021
url	https://doaj.org/article/06c6b44fd39c42b1aeae9ba64afff1dc
work_keys_str_mv	AT takahiroarai voidfractiondistributioninarodbundlewithpartlengthrodsviahighenergyxraycomputedtomography AT atsushiui voidfractiondistributioninarodbundlewithpartlengthrodsviahighenergyxraycomputedtomography AT masahirofuruya voidfractiondistributioninarodbundlewithpartlengthrodsviahighenergyxraycomputedtomography AT riichirookawa voidfractiondistributioninarodbundlewithpartlengthrodsviahighenergyxraycomputedtomography AT tsugumasaiiyama voidfractiondistributioninarodbundlewithpartlengthrodsviahighenergyxraycomputedtomography AT shotaueda voidfractiondistributioninarodbundlewithpartlengthrodsviahighenergyxraycomputedtomography AT kenetsushirakawa voidfractiondistributioninarodbundlewithpartlengthrodsviahighenergyxraycomputedtomography AT kazuakikito voidfractiondistributioninarodbundlewithpartlengthrodsviahighenergyxraycomputedtomography
_version_	1718407566924447744

Void fraction distribution in a rod bundle with part-length rods via high-energy X-ray computed tomography

Ejemplares similares