Numrical study of mixing in Double and multiple T-shaped micromixers with aligned and non-aligned inputs

In this simulation mixing behavior of two fluids water and ethanol with various density and viscosity mixing in 5 types of T-micromixers numerically has been studied. The five Geometries under research are: 1 and 2 geometries are Multiple T-micromixer with non-aligned inputs in one and two plane respectively, and the 3, 4 and 5 geometries are included Multiple T-micromixer, double T-micromixer and T-micromixer. Simulation has been performed using computational fluid dynamics commerical code of Ansys fluent 18 at Schmidt number of 752.26 for 6 different Reynolds number in range of 1 to 200. In creeping flow range viscosity force and in laminar flow (non-creeping) the chaotic of flow was the main mixing factors for all studied geometry. For double T-micromixer and multiple T-micromixers two and three different types for input fluids respectively investigated and the most efficient mixing type has been specified. Cortes-Quiroz et al numerical results used for validation present investigation. Mixing results compared for specific flow types in double and multiple micromixers with single flow type in T-micromixer. The results show mixing index and pressure drop are function of inputs’ number and position also for geometries with more than two inputs, types of input fluids have effect on these parameters.maximum mixing index which was 0.4878 has been observed using flow 1 in Multiple T-micromixer at Re= 1