Abstract
Friction and windage losses in Pelton wheels arise because the air around the Pelton wheel is continuously entrained to circulate and the rotation of Pelton wheels is persistently resisted by air friction on the wheel surface. These effects are therefore referred to as , and in practical applications, these two types of losses depend on designs of the turbine casing, wheel size, and rotational speed of the wheel. They are strongly coupled so that they cannot be separated from each other, neither in calculations nor from measurements. In particular, air mixture as enriched by water sprays plays a special role because of its specific density.
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References
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Zhang, Z. (2016). Friction and Windage Losses in Pelton Wheels. In: Pelton Turbines. Springer, Cham. https://doi.org/10.1007/978-3-319-31909-4_13
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DOI: https://doi.org/10.1007/978-3-319-31909-4_13
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