The paper reviews recent research and development activities in the field of hydropower
technology. It covers emerging and advanced technologies to mitigate flow instabilities …

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 …

Abstract Rotating Vortex Rope (RVR) resulting from flow instabilities inside draft tube affects
the hydraulic turbine's efficiency and wear. Among the passive and active RVR mitigation …

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 …

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 …

Hydropower refers to energy conversion from flowing water into electricity. Due to water
recycling by the Sun, hydropower is widely accepted as a form of renewable energy. A …

Reversible pump turbine plays an important role in pumped storage technology. Its pressure
pulsation performance also directly affects the stability and efficiency of unit operation. In this …

Precessing vortex rope (PVR) plays a key role in inducing hydraulic resonance in Francis
turbines operating at partial load, possibly degrading power plant stability and availability …

This review addresses the current state of research into active control and suppression of
vortex rope in hydroturbines under off-design operating conditions. Only active control …

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 …