Performance Evaluation of a Vortex Induced Piezoelectric Energy Converter (VIPEC) with CFD Approach

A novel vortex induced piezoelectric energy converter (VIPEC) was present in this paper to harvest flow kinetic from the ambient environment through a beam. The consists of circular cylinder, pivoted beam attached tail cylinder and several patches. Vortex pressure difference acts on drives squeeze piezo patches convert fluid dynamic into electric energy. Transition Shear Stress Transport (SST) combined with Scale Adaptive Simulation (SAS) model employed predict turbulent separation around various lengths at high Reynolds number 8 × 104 based computational dynamics (CFD) approach. accuracy SST-SAS investigated verification validation studies. output voltage equation derived constitutive equation. It revealed that length influences wake pattern, angle shedding frequency greatly changing adverse gradient cylinder. pattern becomes symmetrical about when is longer than critical value. has little influence angle. When 1.3 times diameter achieves its maximum, minimal. Maximal reaches 20 mV.