Flow in a Corrugated Walls with EMHD

Abstract

EMHD micropumps have di§erent points of interest, to be particular essential manufacture process, steady áow force and bidirectional pumping capacity.The principle of EMHD micropump is Lorentz force, which is relating an electric current to the conductive liquid over the channel in the presence of an opposite attractive Öeld.EMHD micropumps have di§erent points of interest, to be particular essential manufacture process, steady áow force and bidirectional pumping capacity. EMHD can be utilized to propel liquids as well as for creating secondary complex áow. The possibility of EMHD micropumps has been exhibited by utilizing both direct áow and rotating áow electric and attractive Öelds.The EMHD micropumps established by both of direct and alternating current electric and magnetic Öelds. Roughnesses on surfaces always occurred during the fabrication process. At the microscale level, it is tough to get a totally smooth wall surface. In any case, in practice, roughness dependably exists on the surface of channel walls that happened during the manufacture procedure or because of the adsorption of di§erent species, for example, macromolecules. Surface roughness can be outlined misleadingly to advance axial rotation or blending. Numerous scientists have considered áow and heat transfer of a liquid through corrugated channel. One basic subject among these investigations is geometrical impacts because of wall corrugations on the áow opposition or pressure drop in the channel. The surface roughness is also mimics by wavy boundary, where roughness impacts are magniÖed by small scale of channel