The internal structure of suspensions in uniaxial elongation
The internal structure of suspensions in uniaxial elongation
复制标题
单轴伸长悬架的内部结构
DOI：
10.1063/1.4789819
复制
发表时间：
2013
影响因子：
3.2
通讯作者：
A. Yarin
中科院分区：
文献类型：
--
作者：
S. Sinha;K. Fezzaa;A. Yarin
Self-thinning of a tiny thread of suspension of glass beads or rods is explored using high-speed X-ray phase-contrast imaging. The overall fluid mechanical pattern is provided by the thread-thinning rate, while the X-ray imaging of the evolution of the suspension internal structure sheds light onto the interplay between fluid mechanics and rheology. In particular, we measured in real time the motion and re-orientation of the individual glass rods in self-thinning liquid threads for the first time, and established the link between these micromechanical phenomena and macroscopic elongational suspension flow. The results with the rod-like particles raise questions on the validity of the common assumption of the affinity of the macroscopic flow kinematics and particle motion.
