水中噴出蒸気の凝縮圧力振動に及ぼす蒸気出口条件の影響

概要

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This paper presents an experimental study of condensation pressure in vent and pool water using single vent tube with various diameter vent caps. Steam mass flow rate increases as the vent cap hole diameter and subcooling of the water. The empirical equation (3) is obtained for the above relations. The maximum pressure amplitude in pool water increases as the cap hole diameter. The dominant frequency increases as the cap hole diameter decreases and as the pool water subcooling increases. The present results of the dominant frequency in the vent tube pressure are agree well with the empirical equations which have been reported by Fukuda and Aya. The pool pressure frequency of condensation oscillation has a low frequency component which has not been investigated by existing studies for the vent tube pressure.
公益社団法人日本マリンエンジニアリング学会の論文