Tristability in Viscoelastic Flow Past Side-by-Side Microcylinders

نویسندگان

چکیده

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 single object large arrays. Here, we report experiments on viscoelastic flow past side-by-side microcylinders with variable intercylinder gap. With increasing rate, sequence two imperfect symmetry-breaking bifurcations forces either one or the three possible paths around cylinders. Tuning gap length value where first bifurcation becomes perfect reveals regions bistability tristability in dimensionless rate-gap phase diagram.

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ژورنال

عنوان ژورنال: Physical Review Letters

سال: 2021

ISSN: ['1079-7114', '0031-9007', '1092-0145']

DOI: https://doi.org/10.1103/physrevlett.126.054501