Unsteady flow regimes in arrow-shaped micro-mixers with different tilting angles

Two arrow-shaped micro-mixers, obtained from the classical T-shaped geometry by tilting downward inlet channels, are considered herein. The two configurations, having different angle values, have been chosen since they show significantly flow topologies and mixing performances at low Reynolds numbers. In present paper, we use both experimental visualizations direct numerical simulations to shed light on behavior of configurations for larger numbers, which mixers unsteady periodic flows, although in laminar conditions. influences dynamics also regimes has a significant impact mixing. configuration characterized lower angle, i.e., ? = 10°, ensures better global performance than one with 20°.