Experimental study on improvement of inlet orifice in BWR core

M. Akiba, Shinichi Morooka, K. Shirakawa, K. Chuman

研究成果: Article

抄録

The purpose of this study is to develop the core inlet orifice whose drag coefficient changes according to flow rate without drive parts. We improved on the conventional orifice by giving it a novel shape; the edge of the improved orifice is half-oval in shape. This improved orifice was tested under high-pressure and high-temperature (about 7.2 MPa and 570 K) simulated ABWR conditions. Test results showed that the drag coefficient of the orifice with the novel shape changed according to flow rate. It was found from these test results that drag coefficient was constant and high under ABWR natural circulation conditions and decreased by about 20% under ABWR rated power conditions. In addition, a task for the future was educed.

元の言語English
ページ(範囲)793-798
ページ数6
ジャーナルJournal of Nuclear Science and Technology
38
発行部数9
出版物ステータスPublished - 2001 9
外部発表Yes

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orifices
Orifices
drag coefficients
Drag coefficient
flow velocity
Flow rate
Intake systems
Temperature

ASJC Scopus subject areas

  • Nuclear Energy and Engineering

これを引用

Experimental study on improvement of inlet orifice in BWR core. / Akiba, M.; Morooka, Shinichi; Shirakawa, K.; Chuman, K.

:: Journal of Nuclear Science and Technology, 巻 38, 番号 9, 09.2001, p. 793-798.

研究成果: Article

Akiba, M, Morooka, S, Shirakawa, K & Chuman, K 2001, 'Experimental study on improvement of inlet orifice in BWR core', Journal of Nuclear Science and Technology, 巻. 38, 番号 9, pp. 793-798.
Akiba, M. ; Morooka, Shinichi ; Shirakawa, K. ; Chuman, K. / Experimental study on improvement of inlet orifice in BWR core. :: Journal of Nuclear Science and Technology. 2001 ; 巻 38, 番号 9. pp. 793-798.
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KW - Orifices

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