Prediction of hydro-acoustic resonances in hydropower plants by a new approach based on the concept of swirl number

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The surface of the Earth is snow-covered at least seasonally over large areas. This snow surface is highly dynamic, particularly under the influence of strong winds. The motion of snow particles driven by the wind not only changes the snow cover but has im ...

In the framework of the new feed-in-tariff system in Switzerland for Small Hydropower Plants (SHP), the aim of the SmallFLEX project, led by HES-SO Valais and performed in collaboration with EPFL, WSL, EAWAG, PVE, and FMV, is to show how SHP can provide wi ...

Numerical simulation of tip vortex cavitation (TVC) remains a challenging task in a variety of applica-tions, such as axial turbines and pumps as well as marine propellers. Although it is well known that TVC is highly sensitive to gas content, be it dissol ...

For the design optimization of the Pelton turbine, it is highly demanded to investigate the flow inside the turbine casing, which includes the water jet from the nozzles, the interaction between the jet and rotating runner, and the flow ejected from the bu ...

The paper presents a model-based control strategy for optimal asset management of hydroelectric units in run-of-river hydropower plants. The proposed control strategy aims to operate the unit at the best efficiency while improving water flow management and ...

The turbulent plunging jet of a nearly incompressible fluid into a stagnant fluid is of great importance in many practical applications, especially for the engineering of hydropower. As an example, the dynamic load exerted by the impact of turbulent high-v ...

This paper presents preliminary results of an experimental study on the occurrence and development of the upper part-load instability in a reduced-scale Francis turbine. The study includes draft tube pressure measurements, high-speed flow visualization, an ...

Nowadays, the importance of providing frequency stability to power systems with hydropower units is significantly increasing due to the growing proportion of volatile renewable energy sources. However, the provision of such services, as frequency containme ...

The hydropower sector has recently raised the interest in pump as turbine (PaT) that can be a valid trade-off between capital cost and performance in micro-scale installations. Nevertheless, the modest efficiency of PaTs often restricts their exploitation. ...

Hydropower plays a pivotal role in the socio-economic development of Bhutan where water resource is abundantly available and therefore several hydropower plants are being planned and a few under construction. However, with the presence of several potential ...

The research community has been making significant progress in hardware implementation, numerical computing and algorithm development for optimization-based control. However, there are two key challenges that still have to be overcome for optimization-base ...

The forms of U-shaped UHPFRC beams have not been investigated for the highway footbridge. Compared with the traditional section forms, the U-shaped UHPFRC beams can reduce the material consumption under the condition of providing the same bearing capacity. ...

Prediction of hydro-acoustic resonances in hydropower plants by a new approach based on the concept of swirl number

Chattez avec Graph Search

Modeling Snow Saltation: The Effect of Grain Size and Interparticle Cohesion

Numerical simulations of Pelton turbine flow to predict large head variation influence

A new Euler-Lagrangian cavitation model for tip-vortex cavitation with the effect of non-condensable gas

Application of particle-based numerical analysis to the practical design of Pelton turbine

Improving frequency containment reserve provision in run-of-river hydropower plants

Single-phase SPH modelling of plunge pool dynamic pressures at a near-prototype scale

An experimental study on the upper part-load elliptical vortex instability in a Francis turbine

Optimal CAM Computation of Kaplan Turbines Accounting for Wear and Tear Originated by Frequency Control

Numerical investigation on the volute cutwater for pumps running in turbine mode

Development of a Semi-distributed Hydrological Model for Glaciated Punatshangchu Basin in Bhutan

Optimization Methods for Control: From Embedded Programmable Hardware to Data-Driven Process Optimization

Study on Mechanical Performance of Prestressed UHPFRC U-Beam Bridges