Abstract
In this paper, experiments were conducted to study the drag-reduction and heat transfer performances of a newly synthesized zwitterionic surfactant solution (Oleyl trimethylaminimide) in a two-dimensional channel. It was found that the novel zwitterionic surfactant solution showed both drag and heat transfer reduction characteristics, which were affected by concentration and temperature. For enhancing heat transfer of the surfactant drag-reducing flow, a destructive device of Venturi type, named Block, was designed and used in the experiments. It was found that the Block device can enhance the heat transfer performance of the novel zwitterionic surfactant solution to some extent while having a very small pressure drop penalty.
