طراحی و ساخت یک توربین بادی بدون پره و بررسی تأثیر پارامترهای سازه‌ای بر رفتار ارتعاشی آن

With the rapid population growth and increasing demand for sustainable energy, renewable resources like wind energy have gained attention as viable alternatives to fossil fuels. Bladeless wind turbines, due to their simplified structure, lower maintenance costs, and reduced environmental impact, represent a promising technology in wind energy production. This paper focuses on the design, construction, and testing of a bladeless wind turbine prototype with adjustable structural parameters, including height, rod diameter, and weight. First, the turbine's dynamic modeling was performed using the equations of motion for an inverted pendulum. Subsequently, experimental tests were conducted at varying distances from an airflow source and with variable height, rod diameter, and added weight to assess the influence of these factors on the turbine's natural frequency and vibration amplitude. The results indicated that an increase in rod height led to a decrease in natural frequency, altering the structure's dynamic behavior. For instance, for a rod with an 8 mm diameter, increasing the height from 30 cm to 50 cm resulted in a 43.57% reduction in natural frequency. Additionally, adding weight to the turbine structure influenced the lock-in region and vibration amplitude.