Analytical Study of the Electroosmotic Flow of Two Immiscible Power-Law Fluids in a Microchannel

Abstract

The multilayer microchannel flow is a promising tool in microchannel-based systems such as hybrid microfluidics. To assist in the efficient design of twoliquid pumping system, a two-fluid electroosmotic flow of immiscible powerlaw fluids through a microtube is studied with consideration of zeta potential difference near the two-liquid interface. The modified Cauchy momentum equation in cylindrical coordinate governing the two-liquid velocity distributions is solved where both peripheral and inner liquids are represented by power-law model. The two-fluid velocity distribution under the combined interaction of power-law rheological effect and circular wall effect is evaluated at different viscosities and different electroosmotic characters of inner and peripheral power-law fluids. The velocity of inner flow is a function of the viscosities, electric properties and electroosmotic characters of two power-law fluids, while the peripheral flow is majorly influenced by the viscosity, electric property and electroosmotic characters of peripheral fluid. Irrespective of the configuration manner of power-law fluids, the shear thinning fluid is more sensitive to the change of other parameters.

Numerical Simulation of Double Layered Wire Mesh Integration on the Cathode for a Proton Exchange Membrane Fuel Cell (PEMFC)

“…Insights into mass diffusion, proton conductivity, and the oxygen reduction reaction are revealed [7,8]. The earlier-mentioned technique to improve the performance and cost is both affordable and efficient [9]. The establishment of liquid water and its effects on electrochemical processes happening at the interface of the membrane and the electrode, as well as the movement of reactants and products within the air cathode, were predicted by Wang et al using a two-phase flow and transport model.…”