Liquid–Liquid Flows with Non-Newtonian Dispersed Phase in a T-Junction Microchannel

Stability of parallel flows in a microchannel after a T junction.

In this work, the flow of immiscible fluids in microchannels is studied. Flow pattern diagrams obtained in microfluidic chips are presented. Monodisperse droplets or parallel flows are obtained depending on the flow rate values of the aqueous phase and the oil phase. Transition from droplet regime to parallel flows cannot be described in terms of capillary numbers. Using confocal microscopy and...

Incompressible Non-Newtonian Fluid Flows

A non-Newtonian fluid is a fluid whose flow properties differ in many ways from those of Newtonian fluids. Most commonly the viscosity of non-Newtonian fluids is not independent of shear rate or shear rate history. In practice, many fluid materials exhibits non-Newtonian fluid behavior such as: salt solutions, molten, ketchup, custard, toothpaste, starch suspensions, paint, blood, and shampoo e...

Numerical simulation of Newtonian and non-Newtonian flows in bypass

Generation of Oil Droplets in a Non-Newtonian Liquid Using a Microfluidic T-Junction

We have compared the formation of oil drops in Newtonian and non-Newtonian fluids in a T-junction microfluidic device. As Newtonian fluids, we used aqueous solutions of glycerol, while as non-Newtonian fluids we prepared aqueous solutions of xanthan, a stiff rod-like polysaccharide, which exhibit strong shear-thinning effects. In the squeezing regime, the formation of oil droplets in glycerol s...

Incompressible two-phase flows with an inextensible Newtonian fluid interface

Article history: Received 16 April 2016 Received in revised form 14 July 2016 Accepted 20 July 2016 Available online 26 July 2016