Electromagnetohydrodynamic (EMHD) Flow Actuation with Patterned Wettability

Due to the low Re flow in a microchannel, turbulent mixing is absent. Hence, there is a need to explore novel unconventional mechanisms to improve mixing efficiency. In the present study, we theoretically analyze the interplay of an externally applied electromagnetic field and wall wettability in the mixing hydrodynamics. We observe that while the discharge rate through the microchannel depends on both the electric and the magnetic field, the interplay of wall wettability and the magnetic field governs the local vortex generation, which controls the mixing phenomenon. However, the discharge rate reduces with increased magnetic field strength.