Conventional wind turbines in small units are costly and do not allow extensive use in our country for small-scale individual purpose. Also the highly efficient aerodynamically designed windmills require high wind velocity, which is not available in many states in India & Abroad. Considering all these an extremely simple design of a vertical axis wind rotor using two flat vertical vanes, swinging vanes has been fabricated and tested to obtain its performance. The torque and power coefficient have been obtained and presented in this Experimental thesis work. The results are highly encouraging and indicate the usefulness of the swingiDrag and torque coefficient of stationary S-shaped rotor have been investigated by measuring the pressure distribution on the blade surfaces.
Wind turbines will play a crucial role in the global energy transition from a fossil fuel-based world to a renewable-based one. Horizontal-axis wind turbines (HAWTs) currently dominate the commercial sector, although a recent resurgence in interest and research has shown exciting opportunities for the future of vertical-axis wind turbines (VAWTs). Unique cyclical fluid physics results in additional complexity to VAWT blade aerodynamics. Unlike their horizontal-axis counterparts, the rotating blades of a VAWT produce varying torque depending on their location in the circular cycle. The aerodynamic relationship between the incoming wind flow and blade motion is such that the peak power is extracted when the blade and incoming wind.