Paper Title
Wall Flexibility Effect on Mixing Efficiency of Power-law Fluid Flow in a Microchannel

Abstract
In this present study, the effect of fluid and compliant elastic wall rheological parameters on the mixing efficiency of a Non-Newtonian fluid flow in a hyperelastic microchannel is investigated. The fluid follows the power-law model flowing within a micromixer with walls obeying the two-parameter Mooney-Rivlin model. A numerical investigation of flow of power-law fluid in a two-dimensional microchannel with hyperelastic walls was carried out via finite volume scheme utilizing ALE algorithm for solving fluid-structure interaction problem. Based on the simulation results obtained, it is concluded that increasing the dimensionless wall thickness increases mixing efficiency, while increasing the power-law index in the shear thickening fluid zone decreases the mixing efficiency. Keywords - Non-Newtonian Fluid, Mooney-Rivlin Solid, Compliant wall, Micromixer, Mixing Enhancement.