Rheology of Confined Non-Brownian Suspensions
Rheology of Confined Non-Brownian Suspensions
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DOI：
10.1103/physrevlett.116.018301
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发表时间：
2016-01-08
影响因子：
8.6
通讯作者：
Picano, Francesco
中科院分区：
文献类型：
--
作者：
Fornari, Walter;Brandt, Luca;Picano, Francesco
我们使用直接数值模拟研究了平面库埃特流中中性浮力刚性单分散球体的受限悬浮液的流变学。我们发现，如果通道的宽度是球体直径的（小）整数倍，则球体自组织成彼此滑动的二维层，并且悬浮液的有效粘度显着降低。人们发现每个二维层在结构上都类似于液体，但其动态却被及时冻结。
We study the rheology of confined suspensions of neutrally buoyant rigid monodisperse spheres in plane-Couette flow using direct numerical simulations. We find that if the width of the channel is a (small) integer multiple of the sphere diameter, the spheres self-organize into two-dimensional layers that slide on each other and the effective viscosity of the suspension is significantly reduced. Each two-dimensional layer is found to be structurally liquidlike but its dynamics is frozen in time.