论文标题
粘弹性引起的墙壁上的滑动发作是聚合物流体的
Viscoelasticity induced onset of slip at the wall for polymer fluids
论文作者
论文摘要
已经研究了模型粘弹性聚合物溶液在壁上的滑动逐渐发作，该墙壁上的滑动与滑动时间的长度相对应，随着招标时间的增加而增加，这使得一个允许一个最长的放松时间，同时保持恒定的固体 - 流体相互作用。基于麦克斯韦流体的流体动力模型以及经典的纳维尔对接口处的摩擦应力的线性响应的假设充分说明了数据，而没有任何可调节的参数。无需假定摩擦的粘弹性响应，反映出固定液体摩擦机制的局部特征。
The progressive onset of slip at the wall, which corresponds to a slip length increasing with the solicitation time before reaching a plateau, has been investigated for model viscoelastic polymer solutions, allowing one to vary the longest relaxation time while keeping constant solid - fluid interactions. A hydrodynamic model based on a Maxwell fluid and the classical Navier's hypothesis of a linear response for the friction stress at the interface fully accounts for the data, without any adjustable parameter. No viscoelastic response needs be postulated for the friction, reflecting the local character of solid-liquid friction mechanisms.
