IJSR - International Journal of Scientific Research

Akshay Agrawal; Aditya Sheth; Prof. Ankit Dandiwala; Prof. Subhasis Sarkar

Volume : VI, Issue : V, May - 2017

RESEARCH PAPER ON BLADELESS WINDMILLS BASED ON THE PRINCIPLE OF VIBRATION

Akshay Agrawal, Aditya Sheth, Prof. Ankit Dandiwala, Prof. Subhasis Sarkar

Abstract :

The bladeless windmills uses a radically new approach for capturing both intermittent wind energy pulses and constant wind flow under specified wind velocity and pressure. The windmill utilizes the energy of vorticity, an aerodynamic effect (vortex shedding).As wind strikes a fixed structure, its flow changes and a cyclical pattern of eddies or vortices are formed in the vicinity of the structure. As these forces go strong, the structure starts viating. Consequently, these aerodynamic instabilities can be utilized to run a linear alternator or a crankshaft. The natural frequency of the structure should not match with the frequency of viation, which is one of the design criteria, our design takes care of this major criteria. The design of our windmill is entirely different from a traditional windmill. Instead of the huge tower, nacelle and blades, this device has a conical frustum mast made up of fiber–glass (pivoted at one–third length from bottom), a crankshaft, a crank, a connecting rod and a hinge joint. The hollow and light weight mast makes this device portable and user–friendly. Also, this low cost components opens a way for low cost renewable source of energy.