Abstract

The investigations of flow-induced vibration have been around for decades to solve many engineering problems related to structural element. In a hindsight of advancing technology of microelectronics devices, the implementation of flow-induced vibration for energy harvesting is intrigued. The influence of downstream flat plate to flow-induced vibration experienced by a square cylinder is discussed in this study to surpass the limitation of wind energy due to geographical constraints and climate change. The mechanism of flow-induced vibration experienced by a square cylinder with downstream flat plate is numerically simulated based on the unsteady Reynolds Navier-Stokes (URANS) flow field. The Reynolds number, Re assigned in this study is ranging between 4.2 x 10(3)-10.7 x 10(3) and the mass damping ratio designated for the square cylinder is m*zeta = 2.48. The influence of three different flat plate lengths w/D=0.5, 1 and 3 is examined. Each case of different flat plate is explored for gap separation between the square cylinder and the plate in the range 0.5 <= G/D <= 3. Based on the numerical findings, the configuration of cylinder-flat plate with length w/D = 1 has shown the highest potential to harvest high energy at comparatively low reduced velocity.