The mast’s vibration energy under different wind intensities was also experimentally tested using a scaled model in the wind tunnel. These simulations examined the mast-produced lift coefficient, velocity, pressure, and vorticity contours of different mast geometries. Computational fluid dynamics (CFD) modeling and simulations were performed on the elastic mast, a VIV device’s core wind energy–collecting component, to guide the device’s design. Different airflow disruption geometries are studied and tested numerically and experimentally to identify the most effective shape and orientation for converting wind energy to electric energy. The proposed design takes advantage of vortices generated when the airflow interacts with the mast, and the flow splits and then separates and generates vortices that eventually make the elastic rod oscillate, and out of these oscillations, energy can be harvested. The proposed design is mainly composed of a base, a hollow mast, and an elastic rod. This study proposes a bladeless wind energy–harvesting device based vortex-induced vibrations (VIV). To meet the growing energy demand and increasing environmental concerns, clean and renewable fluid energy, such as wind and ocean energy, has received considerable attention.