Liquid Film Dryout and Re-wetting Behavior

Shinichi Morooka; Yasushi Yamamoto; Satoru Oomizu; Yoshiro Kudo; Koji Nishida; Hideya Kitamura

doi:10.3327/taesj2002.2.510

Liquid Film Dryout and Re-wetting Behavior

Shinichi Morooka, Yasushi Yamamoto, Satoru Oomizu, Yoshiro Kudo, Koji Nishida, Hideya Kitamura

Research output: Contribution to journal › Article › peer-review

Abstract

This paper deals with liquid film dryout and rewetting behavior under BWR (Boiling Water Reactor) transient condition. The rewetting behavior has not been fully clarified. Therefore, the transient BT (Boiling Transition) tests were performed using a simulated BWR 4x4 rod bundle which many thermocouples were installed along one of the heater rod in order to clarify the re-wetting behavior. The following results were obtained; (1) The BT occurs initially just upstream of the spacer. The location of BT then propagates upstream, and finally rewetting occurs upstream between adjacent spacers. (2) The liquid film front exists between spacers. (3) Rewetting propagation velocity decreases, as wall superheat increases.

Original language	English
Pages (from-to)	510-516
Number of pages	7
Journal	Transactions of the Atomic Energy Society of Japan
Volume	2
Issue number	4
DOIs	https://doi.org/10.3327/taesj2002.2.510
Publication status	Published - 2003
Externally published	Yes

Keywords

boiling transition
BWR type reactors
dryout
liquid film
re-wetting

ASJC Scopus subject areas

Nuclear Energy and Engineering
Safety, Risk, Reliability and Quality

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10.3327/taesj2002.2.510

Cite this

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title = "Liquid Film Dryout and Re-wetting Behavior",

abstract = "This paper deals with liquid film dryout and rewetting behavior under BWR (Boiling Water Reactor) transient condition. The rewetting behavior has not been fully clarified. Therefore, the transient BT (Boiling Transition) tests were performed using a simulated BWR 4x4 rod bundle which many thermocouples were installed along one of the heater rod in order to clarify the re-wetting behavior. The following results were obtained; (1) The BT occurs initially just upstream of the spacer. The location of BT then propagates upstream, and finally rewetting occurs upstream between adjacent spacers. (2) The liquid film front exists between spacers. (3) Rewetting propagation velocity decreases, as wall superheat increases.",

keywords = "boiling transition, BWR type reactors, dryout, liquid film, re-wetting",

author = "Shinichi Morooka and Yasushi Yamamoto and Satoru Oomizu and Yoshiro Kudo and Koji Nishida and Hideya Kitamura",

year = "2003",

doi = "10.3327/taesj2002.2.510",

language = "English",

volume = "2",

pages = "510--516",

journal = "Transactions of the Atomic Energy Society of Japan",

issn = "1347-2879",

publisher = "Atomic Energy Society of Japan",

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}

TY - JOUR

T1 - Liquid Film Dryout and Re-wetting Behavior

AU - Morooka, Shinichi

AU - Yamamoto, Yasushi

AU - Oomizu, Satoru

AU - Kudo, Yoshiro

AU - Nishida, Koji

AU - Kitamura, Hideya

PY - 2003

Y1 - 2003

N2 - This paper deals with liquid film dryout and rewetting behavior under BWR (Boiling Water Reactor) transient condition. The rewetting behavior has not been fully clarified. Therefore, the transient BT (Boiling Transition) tests were performed using a simulated BWR 4x4 rod bundle which many thermocouples were installed along one of the heater rod in order to clarify the re-wetting behavior. The following results were obtained; (1) The BT occurs initially just upstream of the spacer. The location of BT then propagates upstream, and finally rewetting occurs upstream between adjacent spacers. (2) The liquid film front exists between spacers. (3) Rewetting propagation velocity decreases, as wall superheat increases.

AB - This paper deals with liquid film dryout and rewetting behavior under BWR (Boiling Water Reactor) transient condition. The rewetting behavior has not been fully clarified. Therefore, the transient BT (Boiling Transition) tests were performed using a simulated BWR 4x4 rod bundle which many thermocouples were installed along one of the heater rod in order to clarify the re-wetting behavior. The following results were obtained; (1) The BT occurs initially just upstream of the spacer. The location of BT then propagates upstream, and finally rewetting occurs upstream between adjacent spacers. (2) The liquid film front exists between spacers. (3) Rewetting propagation velocity decreases, as wall superheat increases.

KW - boiling transition

KW - BWR type reactors

KW - dryout

KW - liquid film

KW - re-wetting

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JF - Transactions of the Atomic Energy Society of Japan

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Liquid Film Dryout and Re-wetting Behavior

Abstract

Keywords

ASJC Scopus subject areas

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