Visualization experiment of complex flow field in a sphere-packed pipe by detailed PIV measurement

Shinji Ebara, Mohammad Reza Nematollahi, Hidetoshi Hashizume

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A sphere-packed pipe has been proposed as a heat transfer promoter for the first wall cooling in a Flibe blanket. In this study, the flow field in a sphere-packed pipe was well investigated by means of two-dimensional PIV method by matching refractive index of a channel material and working fluid. Three-dimensional flow structure was clarified by integrating the obtained data. The feature of the flow was tortuous high-velocity region formed near pebbles and large velocity fluctuation in the vicinity of the channel wall. And, to apply this flow structure to the actual first wall cooling, a new cooling system using finger-stacked structure was proposed and discussed.

Original languageEnglish
Pages (from-to)1251-1256
Number of pages6
JournalFusion Engineering and Design
Issue number7-8
Publication statusPublished - 2014 Oct


  • Flibe blanket
  • Flow visualization
  • Heat transfer enhancement
  • Sphere-packed pipe

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering


Dive into the research topics of 'Visualization experiment of complex flow field in a sphere-packed pipe by detailed PIV measurement'. Together they form a unique fingerprint.

Cite this