Experimental evaluation of pipe wall thinning characteristics downstream of an orifice for an asymmetric swirling flow generated in a three-dimensionally- connected elbow piping as the inflow condition

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Abstract

Flow visualization experiment and accelerated pipe wall thinning experiment were conducted by applying a swirling flow generated by a piping configuration, three-dimensionally connected dual elbow, to the inlet flow condition of a pipe orifice to investigate pipe wall thinning downstream of an orifice appearing due to the combination of swirling flow and orifice. The flow downstream of the orifice was curved by the action of the swirling flow, and the channel wall where the flow turned off toward underwent a large amount of wall thinning. Profiles of turbulent quantities, such as turbulent kinetic energy and Reynolds shear stress, were compared to those of amount of pipe wall thinning. It was found that the profiles of Reynolds shear stress showed good agreement with those of pipe wall thinning in the case for a large amount of that. However, relatively small amount of pipe wall thinning, any profile related to fluid motion could not explain the profiles of pipe wall thinning.

Original languageEnglish
Pages (from-to)2616-2620
Number of pages5
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume79
Issue number808
DOIs
Publication statusPublished - 2013

Keywords

  • Flow visualization
  • Flow-accelerated corrosion
  • Pipe flow
  • Pipe wall thinning
  • Swirling flow

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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