Study of Mass transfer effect on Flow Accelerated Corrosion

Kimitoshi Yoneda, Fumio Inada, Ryo Morita, Masahiro Furuya

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)427-428
Number of pages2
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume75
Issue number751
DOIs
Publication statusPublished - 2009 Jan 1
Externally publishedYes

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Keywords

  • Flow Accelerated Corrosion (FAC)
  • Mass Transfer Coefficient
  • Pipe Wall Thinning

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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