论文标题
在三维通道中有效nematic的流动状态和过渡
Flow states and transitions of an active nematic in a three dimensional channel
论文作者
论文摘要
我们使用活性的黑霉水动力学研究3D微通道中活性流体的流动，发现活动湍流与沿通道净流动的净流量之间的过渡。我们表明，只有当主动列在流动对准时，并且与实验一致时，净流才有可能，净流的外观取决于通道横截面的纵横比。我们用何时由于通道壁引起的流体动力筛查可以解释我们的结果，从而使涡旋卷在通道上的出现。
We use active nematohydrodynamics to study the flow of an active fluid in a 3D microchannel, finding a transition between active turbulence and regimes where there is a net flow along the channel. We show that the net flow is only possible if the active nematic is flow aligning and that - in agreement with experiments - the appearance of the net flow depends on the aspect ratio of the channel cross-section. We explain our results in terms of the when hydrodynamic screening due to the channel walls allows the emergence of vortex rolls across the channel.
