Visualization and measurement of gas-liquid metal two-phase flow with large density difference using thermal neutrons as microscopic probes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • K. Mishima
  • Y. Saito
  • H. Nishihara
  • Y. Tobita
  • K. Konishi
  • M. Matsubayashi

Detail(s)

Original languageEnglish
Pages (from-to)229-234
Journal / PublicationNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume424
Issue number1
Publication statusPublished - 3 Nov 1999
Externally publishedYes

Conference

TitleProceedings of the 1998 3rd International Topical Meeting on Neutron Radiography, ITMNR-3
CityLucerne, Switzerland
Period16 - 19 March 1998

Abstract

In a core melt accident of a fast breeder reactor, there is a possibility of boiling of the fuel-steel mixture in the containment pool. In relation to safety evaluation on severe accident, it is indispensable to evaluate the possibility of re-criticality of melted core. Gas-liquid two-phase flow with a large liquid-to-gas density ratio is formed due to the boiling of fuel-steel mixture. Although it is anticipated that the large density ratio may affect the basic characteristics of two-phase flow, little work has been performed so far on two-phase flow with a large liquid-to-gas density ratio. In this study, visualization and void fraction measurement of gas-liquid metal two-phase flow were performed by using neutron radiography and image processing techniques. Then, the effect of large density difference between gas and liquid phases on the basic flow characteristics of two-phase flow was clarified.

Bibliographic Note

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Citation Format(s)

Visualization and measurement of gas-liquid metal two-phase flow with large density difference using thermal neutrons as microscopic probes. / Mishima, K.; Hibiki, T.; Saito, Y. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 424, No. 1, 03.11.1999, p. 229-234.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review