Viscoelastic levitation
Viscoelastic levitation
复制标题
粘弹性悬浮
DOI:
10.1017/jfm.2022.418
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发表时间:
2022
影响因子:
3.7
通讯作者:
Zenit, Roberto
中科院分区:
文献类型:
--
作者:
Su, Yunxing;Castillo, Alfonso;Shun Pak, On;Zhu, Lailai;Zenit, Roberto
The effects of viscoelasticity have been shown to manifest themselves via symmetry breaking. In this investigation, we show a novel phenomenon that arises from this idea. We observe that when a dense sphere is rotated near a wall (the rotation being aligned with the wall-normal direction and gravity), it levitates to a fixed distance away from the wall. Since the shear is larger in the gap (between the sphere and the wall) than in the open side of the sphere, the shear-induced elastic stresses are thus asymmetric, resulting in a net elastic vertical force that balances the weight of the sphere. We conduct experiments, theoretical models and numerical simulations for rotating spheres of various sizes and densities in a Boger-type fluid. In the small-Deborah-number range, the results are collapsed into a universal trend by considering a dimensionless group of the ratio of elastic to gravitational forces.
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DOI:
10.1103/physreve.90.013010
发表时间:
2014-07
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
Li GJ;Ardekani AM
通讯作者:
Ardekani AM
DOI:
10.1530/jrf.0.0530259
发表时间:
1978
期刊:
Journal of reproduction and fertility
影响因子:
--
作者:
D. Katz;R. N. Mills;T. R. Pritchett
通讯作者:
T. R. Pritchett
影响因子:
1.8
作者:
M. Dressler
通讯作者:
M. Dressler
影响因子:
1.6
作者:
F. Godínez;O. Chávez;R. Zenit
通讯作者:
R. Zenit
DOI:
10.1140/epje/i2014-14060-y
发表时间:
2014-07
期刊:
The European Physical Journal E
影响因子:
--
作者:
F. Nadal;O. S. Pak;Lailai Zhu;L. Brandt;E. Lauga
通讯作者:
F. Nadal;O. S. Pak;Lailai Zhu;L. Brandt;E. Lauga