Ubiquity of domain patterns in sheared viscoelastic fluids
Ubiquity of domain patterns in sheared viscoelastic fluids
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DOI：
10.1103/physreve.69.061503
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发表时间：
2004-06-01
影响因子：
2.4
通讯作者：
Kim, H
中科院分区：
文献类型：
--
作者：
Hobbie, EK;Lin-Gibson, S;Kim, H
在两相粘弹性流体中观察到普遍存在的域模式，属于在剪切流下悬浮在粘弹性较小的流体中的软粘弹性域的简单范式。三种截然不同的复杂流体表现出相同的剪切诱导域结构，我们通过近似的韦森伯格数将其与分散相的弹性联系起来。我们提出了形成这种普遍模式的物理机制，独立于悬浮相弹性的动态起源。
A ubiquitous domain pattern is observed in two-phase viscoelastic fluids falling within the simple paradigm of soft viscoelastic domains suspended in a less viscoelastic fluid under shear flow. Three strikingly different complex fluids exhibit the same shear-induced domain structure, which we relate to the elasticity of the dispersed phase via an approximate Weissenberg number. We suggest a physical mechanism for the formation of this pervasive pattern, independent of the dynamic origin of the elasticity of the suspended phase.