Effect of radial and axial clearance on the performance of a specially designed savonius vertical axiswind turbine

Abstract EN

Savonius wind turbine (SWT) has a simple construction and can produce electricity in
any wind direction.

Although Savonius wind rotor has many advantages, but it has a low
power coefficient when compared with other horizontal and vertical axis wind rotors.

In
this paper; an experimental study is carried out to investigate the effect of geometrical
parameters (radial and axial clearances) on the performance of SWT in terms of torque
coefficient and power coefficient.

For this reason, analysis is carried out to optimize and
improve the operation of such turbines.

Two buckets' Savonius rotor model was selected,
designed and manufactured with a diameter of