A basic analysis of the Savonius wind turbine shape

Basic analysis of the Savonius Wind Turbine Shape. I mentioned in the video that at a certain part of the rotation of the turbine that there is practically no collection of the windforce converted to usable power. This however can be overcome by using the "stacked and (angle, 180 degrees rotated) offset" of another Savonius on top of the first one. In a way this is somewhat then like a 4 bladed Savonius that is possible, or a dual Savonius. This will then give 4 pulses per revolution in this configuration. Of course the more you stack, the more weight on the rotation axis support bearings, so then lighter/stronger materials should be considered.

In general, the larger the windblades of the Savonius turbine, the larger both the collected/rotation forces and drag forces. The blades can be larger in the horizontal, vertical or both dimensions. The smaller the turbine blades (from the axis to the tip of the blade), the faster the rotation and the less torque force developed. This loss in torque then can be recovered if the blades are made "taller" in the vertical dimension.

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Howto & Style

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• savonius
• wind
• turbine
• basic
• analysis