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Piezo-Driven Micro Pump

Piezoelectric driven micro-pumps are becoming commonplace in today's markets and FLOW-3D can easily model the physics involved. Above there are a few images and animations demonstrating this. In the animation, a void pressure is set on the back side of the piezoelectric device which is the thin horizontal component. Two valves are included using the General Moving Object model to control the flow direction as the pump oscillates. An oscillating force is applied to move the membrane. This force can be a point source or distributed. Particles are seeded into the animation and are used to help visualize the flow.

A simulation of a piezo-driven micro pump, where an oscillating membrane drives the flow. The piston type devices control the flow direction and move due to the oscillation of the pump which draws in fluid into the chamber as it moves upward and drives fluid out as it moves downward.