This paper mainly summarizes the recent progresses for the cavitation study in the hydraulic
machinery including turbo-pumps, hydro turbines, etc.. Especially, the newly developed …

Electrical power is essential in commercial, economic and social investments especially in
emergent countries. Hydropower energy has become one of the most suitable and efficient …

水轮机作为水电能源开发的核心机械装备, 其性能的优劣决定了水电能源的开发利用率.
在现代科技进步的推动下, 水轮机技术也取得了长足发展. 我国水轮机技术的发展经历了引进 …

The variable demand of the energy market requires that hydraulic turbines operate at
variable conditions, which includes regimes far from the best efficiency point. The vortex …

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 …

Currently, the electrical energy crisis is an important issue in Pakistan. Due to the shortage
of electrical power, inhabitants of the country are facing 10–12 h of blackouts in urban areas …

We perform a numerical analysis of the decelerated swirling flow into the discharge cone of
a model Francis turbine operated at variable discharge and constant head, using an …

We introduce and validate a novel mathematical model for computing the radial profiles of
both axial and circumferential velocity components, respectively, of the swirling flow exiting …

Undesirable flow phenomena in Francis turbines are caused by pressure fluctuations
induced under conditions of low flow rate; the resulting vortex ropes with precession in the …

The present paper demonstrates a proof-of-concept by introducing a variable guide vane
system in the draft tube of a high-head Francis model turbine. The aim is to examine the …