ESTUDIO COMPUTACIONAL DE MÚLTIPLES RECOLECTORES DE ENERGÍA PIEZOELÉCTRICOS A PARTIR DE VIBRACIONES INDUCIDAS POR VÓRTICES

RAMIREZ, J.M.; CASTAÑON, F.; ESPECHE, J.; SARAVIA, C. MARTÍN

Bahia Blanca

Congreso; MECOM 2022; 2022

In this work, a coupled formulation for modeling multiple piezoelectric energy harvestersbased on vortex-induced vibrations phenomenon at arbitrary locations is presented and experimentallyvalidated. The mathematical formulation was performed by coupling the Navier–Stokes equations forincompressible fluid-flow, the Gauss law for piezoelectric equations, and a mass-spring-damper systemrepresenting the oscillating rigid body. The coupled formulation was numerically implemented into a newOpenFOAM library. The numerical simulations for selected test cases were validated by experiments.After validating the numerical results, several working scenarios of three piezoelectric energy harvestersin tandem were simulated in order to evaluate the applicability of the proposed numerical formulation.The results obtained showed that the interaction between cylinders played an important role in bothsynchronization bandwidth and output voltage. The synchronization bandwidth for three harvevsters intandem was 500 % wider than that of an isolated harvester.