69th Annual Meeting of the APS Division of Fluid Dynamics (November 20, 2016 — November 22, 2016)

V0086: Jetting Flow of a Shear Banding Fluid

Authors

• Paul Salipante, National Institute of Standards and Technology
• Charles Little, National Institute of Standards and Technology
• Steven Hudson, National Institute of Standards and Technology

DOI: https://doi.org/10.1103/APS.DFD.2016.GFM.V0086

In this video we show the jetting behavior of a shear banding worm-like micelle solution in microfluidic flows. The jetting behavior is characterized by a self-contained portion of the channel where the fluid velocity is greater than the surroundings. We demonstrate the jetting flow in large aspect ratio rectangular microfluidic channels and compare the cross-section flow profile to numerical simulations. Finally, the inward and outward flow from a glass capillary in a reservoir is compared. While steady flow is observed for outward flow, unsteady jetting behavior is observed for inward flow.