The Savonius VAWT shown in Example 30.2 is mainly driven by drag. As shown in Figure 30.7(b)
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The Savonius VAWT shown in Example 30.2 is mainly driven by drag. As shown in Figure 30.7(b)
, the Savonius design is capable of reaching roughly half of the Betz limit, and for tip-speed ratio close to one, it comes close to saturating the limit on Cp including the effects of wake rotation. Research on Savonius turbines continues and they are used in niche applications. Investigate and discuss the advantages and disadvantages of Savonius turbines.
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