The effect of dusty wind hydrodynamics on bladeless wind turbines

Abstract

The use of bladeless wind turbines (BWTs) for power generation has grown, but their performance under various environmental conditions, particularly dust accumulation, requires further study. This research develops a theoretical mathematical model based on continuity, momentum, and vortex equations to analyze the vibration behavior of the BWT mast, focusing on vortex-induced vibrations. Numerical simulations explore the relationships between dusty wind velocity, vortex shedding frequency, elasticity constant, converted power, and efficiency. The effects of mast height and diameter on oscillation frequency and power conversion efficiency are also examined. Results show that oscillation frequency remains constant along the mast, while power efficiency is inversely proportional to diameter and directly proportional to mast height. The highest power efficiency (16.99%) occurs at 2.75 m, decreasing over time. At 12 m, efficiency peaks at 26.61%. Additionally, increasing dust levels improve efficiency, offering insights for optimizing BWT design in dusty conditions.