Well knowing a good-running hydraulic turbine has important operational and financial
benefits to those who operate a plant. Fatigue damage is the most fundamental failure type …

Over the past decade, the use of conventional one-dimensional numerical-simulation
methods has been demonstrated to be inadequate in terms of their usefulness in …

The paper addresses unsteady pressure measurements on the blades and stationary parts
of a Kaplan turbine model (Porjus U9) during load variation. The turbine was studied in …

This paper reports on unsteady pressure measurements on the runner blades of a Kaplan
turbine model as well as torque and radial load bearing measurements on the …

Hydraulic turbines are more frequently used for power regulation and thus spend more time
providing spinning reserve for electrical grids. Spinning reserve requires the turbine to …

The stable operation of axial flow turbines (AFTs) in the energy conversion process directly
affects their safety and performance. Because of its unstable pressure features, a dynamic …

With the advantages of large flow capacity, low head, and high efficiency, the tubular turbine
can well meet the demand for renewable resources. To obtain its synthetic characteristics in …

In 2012, hydraulic powerplants provided approximately 16% of the total worldwide electricity
production, whereas the share of the other New Renewable Energy (NRE) sources …

The aim of this study is to develop a reliable numerical model that provides additional
information to experimental measurements and contributes to a better exploitation of …

This paper presents a numerical methodology to study Francis turbines at no-load condition,
an important operating condition regarding static and dynamic stresses. The proposed …