Two-dimensional numerical simulation of boiling two-phase flow of liquid nitrogen

Jun Ishimoto, Mamoru Oike, Kenjiro Kamijo

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Two-dimensional characteristics of the boiling two-phase flow of liquid nitrogen in a duct flow are numerically investigated to contribute to the further development of new high-performance cryogenic engineering applications. First, the governing equations of the boiling two-phase flow of liquid nitrogen based on the unsteady drift-flux model are presented and several flow characteristics are numerically calculated taking account the effect of cryogenic flow states. Based on the numerical results, a two-dimensional structure of the boiling two-phase flow of liquid nitrogen is shown in detail, and it is found that the phase change of liquid nitrogen occurs in quite a short time interval compared with that of two-phase pressurized water at high temperature. Next, it is clarified that the distributions of pressure and the void fraction in a two-phase flow show a tendency different from those of fluids at room temperature because of the decrease in sound velocity due to large compressibility and the rapid phase change velocity in a cryogenic two-phase mixture flow. According to these numerical results, the fundamental characteristics of the cryogenic two-phase flow are predicted. The numerical results obtained will contribute to advanced cryogenic industrial applications.

Original languageEnglish
Pages (from-to)114-121
Number of pages8
JournalTransactions of the Japan Society for Aeronautical and Space Sciences
Volume43
Issue number141
DOIs
Publication statusPublished - 2000 Nov

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science

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