Abstract
Recently, research on drag reduction has attracted considerable attention concerning the problem with energy conservation, which is closely related to the prevention of global warming. But, some difficulties remain to clarify the effect of the forming a micelle on the flow behavior of surfactant solutions with some additives in the practical applications. In this study, the experiment carried out the measurement of the friction factor of surfactant solutions added a glycol, fatty acid and potassium, and the particle size distribution of these solutions was measured by means of a dynamic light scattering spectrophotometer. Consequently, it was seen that the drag reduction phenomena do not occur in surfactant solutions added coconut fatty acid and potassium hydroxide, and was discussed the effect of the particle size distribution on the drag reduction.
