Abstract
Heat transfer characteristics of a dilute surfactant/water solution in a two dimensional channel has been experimentally investigated. It is known that surfactant solutions do show a large sensitivity of their drag reduction and heat transfer reduction effectiveness on temperature. In the present experiment, profiles of mean temperature and that of fluctuation intensity were measured relating heat transfer coefficient in the thermal boundary layer. It was found that high diffusivity layer exists near the wall in the drag reducing thermal boundary layer. The relation with high diffusivity layer and heat transfer coefficient is discussed.
