Secondary flow behavior of electrolytic viscous fluids with Bird-Carreau model in curved microchannels

摘要: A curved channel is indispensable for the lab-on-chips system because it provides a convenient scheme increasing length per unit chip area in direction of net flow. secondary Dean flow rectangular microchannels examined by applying finite volume with semi-implicit method pressure-linked equations revised (SIMPLER) algorithm steady non-Newtonian fluids dilute concentrations electrolyte solution. The proposed framework based on theoretical model coupled Cauchy momentum equation Bird-Carreau fluid, electrostatic interaction, and charge conservation. shear thinning effect at turn analyzed respect to parameters interest including zero-shear viscosity power-law index. simulation results realistic microchannel indicate that streamwise axial velocity tends shift toward inner wall this caused stronger spanwise pressure gradient, resulting from sufficiently low number. In case becomes blunt profile spreading each side wall, its skewness directed asymmetrically higher than Newtonian fluid. attaining trend changed competing well matched behavior