Harvesting Energy From Flow Induced Vibration In Fixed-Fixed And Fixed-Pinned Suported Pipleline: Numerical Approach

Abstract

This work investigates the possibility of using flow induced vibration (FIV), in a pipeline as an excitation source for piezoelectric energy harvesting mechanism, using model based approach. Mathematical (Partial and Ordinary Differential Equations) models describing the dynamics of FIV, and of vibration excited piezoelectric transducer, obtained from literature, are used. Algorithms for numerical (finite difference method) solution of the FIV models are developed. The developed algorithms are simulated using MatLab software to obtain the vibrations (transverse accelerations) of pipeline conveying fluid under fixed-fixed and fixed-pinned support. Then simulations of the modified Single Degree of Freedom (SDOF) model of the piezoelectric transducer are carried out using the simulated vibrations as base excitations. A power output of 0.027μ watts with 2.13g acceleration value and 0.0016 and 0.16g acceleration for fixed-fixed and fixed-pinned respectively.