IMPROVING SAVONIUS ROTOR PERFORMANCE BY SHAPING ITS BLADE EDGES

Анотація

The article presents the results of the numerical analysis of the flow inside the Savonius rotor. Particular attention has been paid to the vicinity of the blade gap in order to recognise the mechanisms controlling the flow in this area. The conclusions resulting from the analysis made the basis for an attempt to improve Savonius turbine performance via shaping rotor blade edges. The paper presents selected characteristic flow patterns in the vicinity of the blade gap and the results of blade edge shaping having the form of torque fluctuations recorded during one half- period of rotor rotation.