Abstract
Water flow in rotating buckets is a complex hydro-mechanical process, which is characterized by the presence of a free surface and the influences of centrifugal and Coriolis forces as well as of friction, inertial, and pressure forces in the flow. These forces affect the spreading of water in the bucket and, finally, the hydraulic efficiency of the turbine system. For simplicity, frictionless flow is considered first. The frictional flow and the influence of friction on the hydraulic efficiency will be discussed in Chaps. 10–12.
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Notes
- 1.
The subscript y in Eq. (6.24) is to identify the y-coordinate, so that W y, for instance, indicates the relative flow velocity W at y. It should not be considered to be the y-component of the velocity W.
Reference
Zhang, Zh. (2007). Flow interactions in Pelton turbines and the hydraulic efficiency of the turbine system. Proceedings of the IMechE Vol. 221, Part A: Journal of Power and Energy, pp. 343–357.
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© 2016 Springer International Publishing Switzerland
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Zhang, Z. (2016). Fluid Mechanics in the Rotating Bucket. In: Pelton Turbines. Springer, Cham. https://doi.org/10.1007/978-3-319-31909-4_6
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DOI: https://doi.org/10.1007/978-3-319-31909-4_6
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