垂直上昇気液二相流における界面活性剤添加の効果

概要

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In surfactant solution (TTAB+NaSal) - air two phase flow in a vertical pipe, the pipe friction factor and heat transfer coefficients were investigated. The straight circular pipe of D=5.05mm in diameter and L=2900mm in total length was used. Fiction factors and heat transfer coefficients for surfactant solution - air two-phase flow were larger than those for single flow, but smaller than those for water - air two-phase flow. This seems to be due to drag reduction effects of micelle structure formed. The range where friction factors and heat transfer coefficients have decreased were found in surfactant solution - air two phase vertical flows compared with horizontal flows. This seems to be due to differences of flow pattern.
2005-12-01