CTAB表面活性剂水溶液的减阻特性

Behavior of Drag Reduction for CTAB Surfactant Aqueous Solution

为探讨表面活性剂CTAB作为一种减阻剂使用的可行性,使用5 mm圆管研究了CTAB水溶液的粘度流变特性及减阻特性。结果表明,C16TABr/NaSal水溶液属于非牛顿流体,“SIS”和剪切稀化现象明显;表面活性剂质量分数分别为1.0×10-4,2.0×10-4,3.5×10-4,5.0×10-4的C16TABr/NaSal水溶液的临界雷诺数以及最大减阻率分别为4 800,6 100,8 900,13 500和56%,58%,63%,68%,与牛顿流体相比层流范围扩大。

In order to probe into the feasibility of CTAB surfactant as drag reducer, an experimental investigation was made on the characteristics of the shearing viscosity and drag reduction for the CFAB aqueous solution by using a circular pipe with 5 mm diamter. The results show that C16 TABr/NaSal aqueous ,solution belongs to a non- Ncwtonian fluid, the ‘SIS＇ and shear- thinning phenomena are obvious, in the C16TABr/NaSal aqueous .solution, which mass fraction of surfactant is 1.0×10^-4, 2.0×10^-4, 3.5 ×10^-4 , 5.0 ×10^-4 respectively, the critical Reynolds number is 4 800, 6 100, 8 900, and 13 500 and the maximum drug reduction rate is 56%, 58%, 63 % and 68% respectively, cross-flow range is enlarged compared to Newtonian fluid.