垂直上昇気液環状二相流における液滴流量に及ぼす圧力の影響 : 第2報, 液滴流量に関する各種相関式の広い圧力範囲の実験データによる評価と新相関式の提案

This report provides an assessment of five correlations for estimating the entrainment flow rate. These correlations are compared using air-water experimental entrainment probe data obtained under a wide range of system pressure from 0.30 to 20MPa. There are no correlations that are able to predict the pressure effect under a wide range of pressure for the entrainment flow rate. Two new correlations for the pressure ranges 0.12∼5.0MPa and 7.0∼20.0MPa for predicting the entrainment flow rate are presented. Also, the correlations for minimum superficial gas velocity that be able to divide between liquid lumps and entrainment flow rates are presented, and these conditions are coincide with the mean film thickness 1.Omm.