Work

Investigation of an innovative savonius turbine in practice

Year: 2025

Type: article

Abstract: The current study recommends a novel design that includes lightweight flapping gates that open when the convex side is facing the wind source in order to reduce negative torque and increase the efficiency of Savonius wind turbines. Very light leaf or torsional springs can be used to ensure that the gates close smoothly by returning them to their closed state. The efficiency of the turbine is increased when the flapping gates open because there is less drag force and resistive torque applied to the turbine shaft. Two turbines, one with the conventional shape and the other with flapping gates, were created in order to achieve this. The two turbines were then compared to one another under similar circumstances. To collect the necessary readings, an experimental setup with a variety of sensors was developed. Experiments were carried out at various air velocities to calculate the static torque coefficient and power coefficient. It was proved that the new design, which has a higher static torque and power coefficient, is more effective than the conventional design. The power coefficient increases by an average of 25% at middle speed ranges, but only by about 16.914% at higher tip speed ratios.

Source: Scientific Reports

DOI: 10.1038/s41598-025-88544-w

Authors: R. Afify, E. Saber, H. Awad

Institution: Arab Academy for Science, Technology, and Maritime Transport

Language: English

Topic: Wind Energy Research and Development

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $2,690