在封闭湍动流体中采用表面活性剂减阻

Many surfactants and polymers are considered as excellent drag reducing agents. This phenomenon induces
a significant head loss reduction compared to the pure solvent. In this study an aqueous solution of CTAC/NaSal
(CetylTrimethyl Ammonium Chloride and Sodium Salicylate) is used in turbulent pipe flow system. Drag
reduction experiments were carried out for different experimental conditions using pressure drop measurements.
At the same time the spatial velocity distribution was measured and analysed using particle image velocimetry
(PIV). 德国LaVision PIV/PLIF粒子成像测速场仪 Imager LX PIV相机 用于粒子成像测速(PIV)的荧光示踪粒子