Traditional free flow turbines slow down water stream using its kinetic energy. This article describes a method for deriving energy from a free water stream using a unique hydraulic turbine which unlike traditional hydraulic turbines speeds up the water stream using potential energy thanks to a specific hydraulic effect. The article also describes a method of mathematic calculations of output capacity of this kind of turbines. The design of a turbine which also uses this special hydraulic effect is described in the article .
energy, hydrodynamics, turbine, flow, turbulent, hydraulic jump, ejection effect, 'Froude number'