Topics
resonanceDisease
partial dischargeAnatomical structure
Operating Francis turbines at partial discharge is often hindered by the development of the helical vortex (so-called vortex rope) downstream the runner, in the draft tube cone. The unsteady pressure field induced by the precessing vortex rope may also lead to hydro-acoustic resonance. In this paper a simple and robust, method to mitigate the vortex rope by using an axial water jet issued from the crown tip is evaluated. The vortex rope jet control method is investigated experimental on the tes
The purpose of the study is to examine the validity of J-groove in controlling and suppressing swirl...
In order to control and suppress a draft tube surge in a Francis turbine, a new passive device using...
Under part-load conditions, a Francis turbine often suffers from very severe low-frequency and large...
Vortex rope, which induces substantial pressure pulsations, arises in the draft tube (diffuser) of F...
The vortex rope and pressure pulsations caused by a radial pressure gradient in the conical diffuser...
The vortex rope in a flow similar to 70% of Francis turbine part-load is controlled using the active...
The introduction of intermittent renewable energy sources, such as wind and solar power, to the powe...
Hydraulic energy is one of the most important sources in the world for electricity production. Nowad...
A novel method to mitigate the rotating vortex rope is investigated numerically on a propeller turbi...
Our previous experimental and numerical investigations of decelerated swirling flows in conical diff...
Francis turbines are most widely used in hydropower due to their characteristics which include a fas...
Operation of hydraulic turbines beyond optimal conditions leads to formation of precessing vortex co...
The present study introduces the concept of mitigating pressure pulsations in a hydro-turbine draft ...
The flow unsteadiness generated in the draft tube cone of hydraulic turbines affects the turbine ope...
We perform a numerical analysis of the decelerated swirling flow into the discharge cone of a model ...
The purpose of the study is to examine the validity of J-groove in controlling and suppressing swirl...
In order to control and suppress a draft tube surge in a Francis turbine, a new passive device using...
Under part-load conditions, a Francis turbine often suffers from very severe low-frequency and large...
Vortex rope, which induces substantial pressure pulsations, arises in the draft tube (diffuser) of F...
The vortex rope and pressure pulsations caused by a radial pressure gradient in the conical diffuser...
The vortex rope in a flow similar to 70% of Francis turbine part-load is controlled using the active...
The introduction of intermittent renewable energy sources, such as wind and solar power, to the powe...
Hydraulic energy is one of the most important sources in the world for electricity production. Nowad...
A novel method to mitigate the rotating vortex rope is investigated numerically on a propeller turbi...
Our previous experimental and numerical investigations of decelerated swirling flows in conical diff...
Francis turbines are most widely used in hydropower due to their characteristics which include a fas...
Operation of hydraulic turbines beyond optimal conditions leads to formation of precessing vortex co...
The present study introduces the concept of mitigating pressure pulsations in a hydro-turbine draft ...
The flow unsteadiness generated in the draft tube cone of hydraulic turbines affects the turbine ope...
We perform a numerical analysis of the decelerated swirling flow into the discharge cone of a model ...
The purpose of the study is to examine the validity of J-groove in controlling and suppressing swirl...
In order to control and suppress a draft tube surge in a Francis turbine, a new passive device using...
Under part-load conditions, a Francis turbine often suffers from very severe low-frequency and large...
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