Turbine specific speed

Description

The specific speed value (radian/second) for a turbine is the speed of a geometrically similar turbine which would produce one unit of the specific speed of a turbine is given by the manufacturer (along with other ratings) and will always refer to the point of maximum efficiency.

Related formulas

Variables

nsTurbine specific speed (dimensionless) (dimensionless)
nWheel speed (in rpm) (dimensionless)
PPower (in kW) (dimensionless)
HWater head (in m) (dimensionless)