Abstract
In this paper, a one-layer displacement valveless micropump which can work as a micromixer is numerically studied. The micropump consists of a pump chamber, a neck channel, an outlet channel which is perpendicular to the two opposite inlet channels. A side of the pump chamber is enclosed by a vibrating diaphragm which deforms volume of the pump chamber with time, then excites the flow from the inlet to the outlet of the pump. The attained flow rate at the outlet shows the advance of the present micropump in comparison with conventional nozzle-diffuser micropumps. The mixing performance of the devices is studied by Poincare map technique. It is observed that the mixing is enhanced with an inclined rib in the neck channel.
