Measurement of incipient boiling pressure signal and evaporation coefficient of liquid metal.

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概要

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• In the liquid metal boiling with the incipient boiling superheat, the pressure transient is large enough to be measured. In this paper the time constant of pressure transient τ in the growing stage of the vapor bubble is measured and its dependence on the channel geometry, the dynamic constraint and the liquid temperature is made clear. The evap-oration coefficient C is also obtained by measuring the vapor pressure and the liquid column velocity. For potassium C is constant in our experiment and its value is (3.8±0.6) ×10<SUP>-3</SUP>. Using the measured C, the τs are computed with the momentum equation, the state equation and the Hertz-knudsen equation in the kinetic theory.

• 一般社団法人 日本原子力学会の論文

著者

• INOUE Shoji

  Department of Nuclear Engineering, Faculty of Engineering, Osaka University

関連論文

• Heat transfer and temperature fluctuation of lithium flowing under transverse magnetic field.
• Measurement of incipient boiling pressure signal and evaporation coefficient of liquid metal.

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