论文标题
粘弹性流的可三稳定性，并排微夹具经过
Tristability in viscoelastic flow past side-by-side microcylinders
论文作者
论文摘要
粘弹性流经显微镜多孔阵列表现出复杂的路径选择和开关现象。但是，理解这一过程受到缺乏与单个对象和大型阵列之间联系的研究的限制。在这里，我们报告了有关粘弹性流的实验，该实验与并排微夹具具有可变的间间隙间隙。随着流速的增加，一个两个不完美的对称性分叉的序列是圆柱周围三个可能的流动路径中一个或两个的分叉力选择。通过第一个分叉变为完美的值来调整间隙长度，在无尺度流量差距长度“相位”图中揭示了BI的区域和可折叠性。
Viscoelastic flows through microscale porous arrays exhibit complex path-selection and switching phenomena. However, understanding this process is limited by a lack of studies linking between a single object and large arrays. Here, we report experiments on viscoelastic flow past side-by-side microcylinders with variable intercylinder gap. With increasing flow rate, a sequence of two imperfect symmetry-breaking bifurcations forces selection of either one or two of the three possible flow paths around the cylinders. Tuning the gap length through the value where the first bifurcation becomes perfect reveals regions of bi and tristability in a dimensionless flow rate-gap length `phase' diagram.
