Visualization of dryout phenomenon and liquid film behavior using a single subchannel of a tight lattice bundle

Miyuki Akiba*, Shinichi Morooka, Junji Mimatsu, Sinji Sakai, Akira Inoue

*この研究の対応する著者

研究成果: Article査読

抄録

The development of fast neutron spectrum boiling water reactors requires understanding of flow behavior in a tight lattice bundle. We conducted experiments to visualize single-channel flow under atmospheric conditions and to measure the critical heat flux (CHF) location and liquid film behavior. The observed flow pattern in the tight lattice was in agreement with the Hewitt-Roberts flow pattern map. CHF occurred at the wider rod gap location. Furthermore, the liquid film flow rate at this location was less than that at the narrow rod gap location. The CHF mechanism in a tight lattice would be the film dryout occurring by decreasing the liquid film flow rate.

本文言語English
ページ(範囲)363-372
ページ数10
ジャーナルMultiphase Science and Technology
19
4
DOI
出版ステータスPublished - 2007
外部発表はい

ASJC Scopus subject areas

  • 流体および伝熱

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