Numerical analysis on two-phase flow characteristics of liquid nitrogen

Jun Ishimoto, Kenjiro Kamijo, Mamoru Oike

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Gas liquid two-phase flow characteristics in a pipe flow of liquid nitrogen are numerically investigated. Firstly, the government equations on two-phase flow of liquid nitrogen based on the unsteady drift-flux model are presented and several characteristics are numerically calculated taking into consideration the effect of cryogenic flow state. It is found that phase change of liquid nitrogen occurs in quite short time interval compared with that of pressurized water in high temperature. Next, it is clarified that the pressure wave in two-phase flow forms strongly steep shape with the time progress because of the nonlinearity based on a compressibility of cryogenic two-phase mixture. According to these theoretical results, it seems reasonable to predict the fundamental characteristics of cryogenic two-phase flow, and the obtained numerical results would contribute to advanced cryogenic engineering applications.

Original languageEnglish
Pages (from-to)1741-1747
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number622
Publication statusPublished - 1998


  • Boiling
  • Bubble
  • Cavitation
  • Cryogenic fluid
  • Liquid nitrogen
  • Multiphase flow
  • Numerical analysis
  • Pipe flow
  • Pressure wave


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