Computational Analysis on Numerical Simulation of Internal Flow Physics for Pump as Turbine in Renewable Small Hydro Energy Generation

Table 1

Operational and geometric parameters of the selected centrifugal pump model.

Parameter	Symbol	Value
Flow rate	Qd	12.5 m^3/h
Efficiency	η	56%
Specific speed	ns	47
Rotational speed	n	2900 rpm
Inlet diameter of impeller	Di	104 mm
Outlet impeller diameter	D2	160 mm
Splitter blades inlet diameter	β1	106
Base circle of volute diameter	D3	170 mm
Inlet diameter of volute	D4	174 mm
Inlet width	b3	18 mm
Offset angle of splitter blade	θ	5