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|generator:type = francis_turbine|
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Theis a type of water turbine that was developed by James B. Francis in Lowell, Massachusetts. It is an inward-flow reaction turbine that combines radial and axial flow concepts.
Side-view cutaway of a vertical Francis turbine. Here water enters horizontally in a spiral shaped pipe (penstock) wrapped around the outside of the turbine's rotating runner and exits vertically down through the center of the turbine.