E212 固液二相流における界面活性剤添加の影響(OS-9 単相混相機能性流体の流動と熱伝達I)

概要

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It is known that small quantities of surfactant additives can greatly reduce the friction factors by the formation of rod-like micelles in the flow of a heat transfer medium. However, heat transfer coefficients also reduce during such a drag-reducing surfactant solution flow, and as a result, heat exchangers with a larger heat transfer area would be required. This paper presents an experimental investigation on the heat transfer characteristics in a two-phase flow of a drag-reducing surfactant solution (TTAB+NaSal, the concentration is 500 and 1000 ppm) and polystyrene particles. The objective is to examine heat transfer enhancement with polystyrene particles into drag-reducing flows. Heat transfer enhancement was larger for surfactant solution flow than that for water flow. This indicates that polystyrene particles have the effects of not only mixing flow, but also breaking micelle structure for surfactant solution flow.
社団法人日本機械学会の論文
2005-11-02