Hydropower is a clean and renewable source of energy which is widely used to generate
electric power and stabilize the power grid. It can respond quickly to any change in demand …

Electricity generation from solar and wind has raised a significant concern about the stability
of grid networks. Hydroelectricity plays an important role to balance the stability of grid …

Francis turbine working at off-design operating condition experiences high swirling flow at
the runner outlet. In the present study, a high head model Francis turbine was …

In order to explore the impact load and instantaneous fluid pressure of transient flow on
pump station system under the nonregulative operating conditions, the transient …

Over the past decade, the use of conventional one-dimensional numerical-simulation
methods has been demonstrated to be inadequate in terms of their usefulness in …

Abstract Rotating Vortex Rope (RVR) has been a matter of focus for years due to the major
effects on hydraulic turbine's efficiency. The exact procedure of RVR formation is still vague …

The penetration of intermittent wind and solar power to the grid network above manageable
limits disrupts electrical power grids. Consequently, hydraulic turbines synchronized to the …

Hydraulic turbines include stationary and rotating components. The interaction of the
components, mainly between the runner blades and distributor vanes, is critical when the …

Three-dimensional numerical simulations are carried out by commercial software STAR-
CCM+ to investigate the hydraulic transient and flow behaviours of a prototype pump-turbine …

Hydraulic turbines are increasingly used to regulate the electrical grid. They thus have to
operate more often at off-design conditions where instabilities may develop leading to large …