界面活性剤添加溶液における管壁の局所加熱による抵抗低減特性

抄録

Surfactant solution flow is known for dramatic reduction in turbulent friction drag and heat transfer reduction effectiveness on temperature. When surfactant solution show drag reduction, thermal boundary layer ware also made near the heating wall. In the present study, the distribution of mean temperature and temperature fluctuation in the thermal boundary layer were measured with a fine-wire thermocouple and Two-dimensional channel. We found the relation with drag reduction characteristics to local heating of the channel and thermal boundary layer.