  The fluid-solid-electric dynamics of a flexible plate covered by
interconnected piezoelectric patches in an axial steady flow are investigated
using numerical simulations based on a reduced-order model of the fluid loading
for slender structures. Beyond a critical flow velocity, the fluid-solid
instability results in large amplitude flapping of the structure. Short
piezoelectric patches positioned continuously along the plate convert its local
deformation into electrical currents that are used within a single internal
electrical network acting as an electric generator for the external output
circuit. The relative role of the internal and external impedance on the energy
harvesting of the system is presented and analyzed in the light of a full
modeling of the electric and mechanical energy exchanges and transport along
the structure.
