Application of neutron radiography to flow visualization in supercritical water

N. Takenaka, K. Sugimoto, S. Takami, K. Sugioka, T. Tsukada, T. Adschiri, Y. Saito

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


Supercritical water is used in various chemical reaction processes including hydrothermal synthesis of metal oxide nano-particles, oxidation, chemical conversion of biomass and plastics. Density of the super critical water is much less than that of the sub-critical water. By using neutron radiography, Peterson et al. have studied salt precipitation processes in supercritical water and the flow pattern in a reverse-flow vessel for salt precipitation, and Balaskó et al. have revealed the behaviour of supercritical water in a container. The nano-particles were made by mixing the super critical flow and the sub critical water solution. In the present study, neutron radiography was applied to the flow visualization of the super and sub critical water mixture in a T-junction made of stainless steel pipes for high pressure and temperature conditions to investigate their mixing process. Still images by a CCD camera were obtained by using the neutron radiography system at B4 port in KUR.

Original languageEnglish
Pages (from-to)264-268
Number of pages5
JournalPhysics Procedia
Publication statusPublished - 2013
Event7th International Topical Meeting on Neutron Radiography, ITMNR 2012 - Kingston, ON, Canada
Duration: 2012 Jun 162012 Jun 24


  • Mixing process
  • Nano-particles
  • Neutron radiography
  • Subcritical water
  • Visualization supercritical water

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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