Transiet boiling of sodium in seven-pin bundle under transient overpower conditions.

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概要

• 論文の詳細を見る

• Transient sodium boiling experiments were conducted in an electrically heated 7-pin bundle under transient overpower conditions. In each run the heater power was gradually raised at almost constant rate under forced convection.<BR>The observed coolant voiding was initially limited to the central subchannel on ac-count of an appreciable time lag in temperature rise occurring between the central and peripheral subchannels. This would appear to call for calculations with two-dimensional voiding model.<BR>The bulk pressure rises registered upon initial vaporization were markedly lower than the vapor pressure corresponding to the incipient-boiling (IB) wall superheat. The pressure pulse generated upon vapor bubble collapse correlated reasonably well with the re-entrant liquid velocity, but the measured value was very much smaller than predicted theoretically from sodium hammer analysis.

• 一般社団法人 日本原子力学会の論文

著者

• KIKUCHI Yoshihiro

  O-arai Engineering Center, Power Reactor and Nuclear Fuel Development Corporation

関連論文

• Incipient boiling of sodium in seven-pin bundle under forced convection conditions.
• Transiet boiling of sodium in seven-pin bundle under transient overpower conditions.
• Local sodium boiling behind local flow blockage in simulated LMFBR fuel subassembly.

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