Study of Mass transfer effect on Flow Accelerated Corrosion

Kimitoshi Yoneda*, Fumio Inada, Ryo Morita, Masahiro Furuya

*この研究の対応する著者

研究成果: Article査読

抄録

Flow Accelerated Corrosion (FAC) requires considerable attention in plant piping management, for its potential of catastrophic pipe rupture of main piping systems. In view of fluid dynamics, the most essential factor to be considered is mass transfer at the inner surface of the pipe. Mass transfer coefficients are determined by fluid properties and piping geometry, however, no universal correlation exists, which is adaptable to various types of piping elements with strong turbulence. In this study, the modeling of mass transfer coefficient was progressed based on Chilton-Colburn analogy and utilizing "effective friction velocity" from the hydraulics in the viscous sub-layer along the wall. FAC experiments with PWR condensate water condition and CFD for the flow were conducted with a contracted rectangular duct. By considering the turbulent velocity of the viscous layer into the mass transfer coefficient, the correlation with the FAC thinning rate improved, effectively.

本文言語English
ページ(範囲)427-428
ページ数2
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
75
751
DOI
出版ステータスPublished - 2009 3
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 機械工学

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