Abstract Design and performance analysis of hydraulic turbines are two very crucial aspects
of any hydro power project which ensure economical and efficient functioning of these …

Hydropower plants provide an asset over other renewables of production flexibility. Away
from the turbine design point; detrimental off-load instabilities may compromise the power …

Abstract The construction of Pumped Storage Hydropower Systems (PSHSs) has
significance for improving the renewable energy accommodation capacity and meeting the …

A grid-connected integrated system incorporating cascade hydropower, solar/photovoltaic,
and wind power requires a hydraulic turbine to operate frequently under off-design …

When a Francis turbine operates over an extended range of regimes far from the best
efficiency point, the formation of a helical precessing vortex rope can lead to reduced …

Reversible pump turbines (RPT), though praised for their operational flexibility within
pumped storage hydropower plants, suffer from large flow instabilities that take source from …

Abstract Development of rotating vortex rope (RVR) at part load (PL) operation is a source of
pressure fluctuations in draft tube and power swings, which may lead to runner failure under …

The flow characteristics of the draft tube of a Francis turbine have a significant influence on
turbine stability. Numerical simulations were performed for a Francis turbine under three …

This study aims to provide a comprehensive assessment of single-objective and multi-
objective optimisation algorithms for the design of an elbow-type draft tube, as well as to …

The off-design operation of Francis turbines results in the onset of flow instabilities. These
instabilities lead to severe pressure pulsations, power swings, fatigue damage, and torque …