Transient Boiling Heat Transfer in a Narrow Channel : Fluctuation Phenomena in the Channel Due to Bubble Growth and Collapse

DOI Web Site

この論文をさがす

説明

A transient boiling and a two-phase flow in a narrow channel were experimentally investigated under the condition of step-wise heat input in our previous reports. A periodic pulsating flow due to bubble growth and collapse was observed under relatively low heat input. In the present report, such two-phase flow characteristics in the channel have been analyzed, considering the bubble growth and collapse process based on the transient heat conduction in the surrounding liquid layer in a fluctuating pressure field. The calculation results agree qualitatively with the fluctuation period and the voiding dynamics in the channel obtained by the experiment. It has been confirmed that the change of void fraction distribution along the channel with time is realized by such pressure feed-back effects on the transient boiling as boiling suppression due to local pressurization and boiling promotion due to local depressurization in the channel.

収録刊行物

  • Bulletin of JSME

    Bulletin of JSME 29 (253), 2122-2130, 1986

    一般社団法人 日本機械学会

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ