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 …

Cavitating vortex rope at part load (PL) condition at lower values of the Thoma number (r)
induces severe pressure fluctuation and efficiency reduction in a Francis turbine, which …

As a way of exploitation and utilization of ocean energy, the waterjet pump is used in a wide
range of high-speed marine vessels over 30 knot. This paper aims to investigate the …

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 …

Vortex rope formation at part load (PL) with cavitation inception causes pressure fluctuations
inside the draft tube (DT) of a Francis turbine which may fail the turbine due to resonance …

Abstract The requirements of Liquid Propellant Rocket Engine (LPRE) are high for thrust,
specific impulse, and flow rate; thus, its components also have strict requirements. For the …

The flow losses owing to friction and unstable flow patterns in Francis turbines will cause a
drop in their efficiency. The traditional approach to evaluating the hydraulic losses of Francis …

Free surface vortex (FSV) is a negative phenomenon in pump stations and hydropower
stations. The purpose of this paper is to investigate the pressure pulsation induced by FSV …