[논문]Two-Dimensional Numerical Simulation of Boiling Two-Phase Flow of Liquid Nitrogen

ISHIMOTO, Jun; OIKE, Mamoru; KAMIJO, Kenjiro

[해외논문] Two-Dimensional Numerical Simulation of Boiling Two-Phase Flow of Liquid Nitrogen

Transactions of the Japan Society for Aeronautical and Space Sciences, v.43 no.141 = no.141, 2000년, pp.114 - 121

ISHIMOTO, Jun (Faculty of Science and Technology, Hirosaki University) , OIKE, Mamoru (Institute of Fluid Science, Tohoku University) , KAMIJO, Kenjiro (Institute of Fluid Science, Tohoku University)

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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.

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참고문헌 (16)

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[해외논문] Two-Dimensional Numerical Simulation of Boiling Two-Phase Flow of Liquid Nitrogen

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