A Comparative Study of Impeller Modification Techniques on the Performance of the Pump as a Turbine

Table 2

Basic assumptions and settings used in the CFD analysis.

Steps	Parameters	Setting
Model	Solver; Space; Time; Turbulence model	Pressure-based; Three-dimensional; Steady; Standard -
Operating conditions	Operating pressure; Gravitational acceleration; Density	101 kPa; 9.81 m/s^2 in Z-direction; 997 kg/m^3
Material	Water	At standard working conditions
Boundary conditions	Inlet; Outlet; Interfaces; Impeller; Volute	Total pressure; Mass flow rate; Specified between rotor and stator; Rotating wall; Stationary wall