聚丙烯酰胺水溶液管输摩阻及管壁边界分析

Pipeline Transferring Friction Drags and Pipe Wall Boundary Analysis on Polyacrylamide Aqueous Solutions

论述了聚丙烯酰胺溶解及水溶液的流动特征，给出了聚丙烯酰胺水溶液管输摩阻与流速、雷诺数、管径的关系；讨论了聚丙烯酰胺减阻效果与浓度的关系以及人口效应；根据实验和理论分析，提出了在管道输送过程的不均匀应力场作用下，具有粘弹性的聚丙烯酰胺水溶液在管道内壁边界层处存在着低粘性流体层。

This article discusses the relationship between drag reduction effect of polyacrylamide with its density. According to test and theory analysis the authors put forward that under the uneven stress field action and in the course of pipeline transferring,there is a low viscosity fluid layer on the pipeline inner wall boundary of polyacrylamide soluoions which has elastico-viscosity.