[HTML][HTML] Analysis of emerging technologies in the hydropower sector
The paper reviews recent research and development activities in the field of hydropower
technology. It covers emerging and advanced technologies to mitigate flow instabilities …
technology. It covers emerging and advanced technologies to mitigate flow instabilities …
Hydropower: A renewable energy resource for sustainability in terms of climate change and environmental protection
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 …
recycling by the Sun, hydropower is widely accepted as a form of renewable energy. A …
Analysis of the swirling flow downstream a Francis turbine runner
An experimental and theoretical investigation of the flow at the outlet of a Francis turbine
runner is carried out in order to elucidate the causes of a sudden drop in the draft tube …
runner is carried out in order to elucidate the causes of a sudden drop in the draft tube …
Unsteady pressure analysis of a swirling flow with vortex rope and axial water injection in a discharge cone
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 …
variable conditions, which includes regimes far from the best efficiency point. The vortex …
An overview of active control techniques for vortex rope mitigation in hydraulic turbines
S Shtork, D Suslov, S Skripkin, I Litvinov, E Gorelikov - Energies, 2023 - mdpi.com
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 …
vortex rope in hydroturbines under off-design operating conditions. Only active control …
A review on remedial attempts to counteract the power generation compromise from draft tubes of hydropower plants
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 …
from the turbine design point; detrimental off-load instabilities may compromise the power …
A novel passive method to control the swirling flow with vortex rope from the conical diffuser of hydraulic turbines with fixed blades
In this paper, we introduce a novel passive control method to mitigate the unsteadiness
effects associated to the swirling flows with self-induced instabilities. The control method …
effects associated to the swirling flows with self-induced instabilities. The control method …
Proper orthogonal decomposition of self-induced instabilities in decelerated swirling flows and their mitigation through axial water injection
The swirling flow exiting the runner of a hydraulic turbine is further decelerated in the
discharge cone of the draft tube to convert the excess of dynamic pressure into static …
discharge cone of the draft tube to convert the excess of dynamic pressure into static …
Flow-feedback method for mitigating the vortex rope in decelerated swirling flows
C Tănasă, R Susan-Resiga… - Journal of fluids …, 2013 - asmedigitalcollection.asme.org
When reaction hydraulic turbines are operated far from the design operating regime,
particularly at partial discharge, swirling flow instability is developed downstream of the …
particularly at partial discharge, swirling flow instability is developed downstream of the …
Experimental and numerical investigation of the precessing helical vortex in a conical diffuser, with rotor–stator interaction
The flow unsteadiness generated in a swirl apparatus is investigated experimentally and
numerically. The swirl apparatus has two parts: a swirl generator and a test section. The …
numerically. The swirl apparatus has two parts: a swirl generator and a test section. The …