Due to the massive entrance of new renewable energies such as wind or solar, hydraulic
turbines have to work far from its designed point and withstanding multiple transients, such …

Abstract The Archimedes Screw Turbine (AST) is an innovative type of hydroelectric power
plant that can be particularly useful in locations with very low-head sites (less than 10 m …

Despite the disruptive benefits of Additive Manufacturing (AM), the application of this
technology for safety-critical structural parts in aerospace is still far from being achieved and …

This paper presents various numerical setups for modelling Francis turbine startups
involving moving meshes and variable runner speed in order to help define best practices …

The measurement of stress/strain on blade plays an essential role in the fatigue assessment
of the hydroelectric turbine runner. However, a typical measurement campaign does not …

Water hammer influences the life cycle of hydraulic passages and may even cause
catastrophic structural failures. Several catastrophic failures of hydraulic power units have …

Bulb turbine units are widely used in run-of river or dam projects with relatively low head,
and can also be used for tidal energy utilization. Some types of bulb turbines have excessive …

Probabilistic routines are necessary to determine the permissible design stress when the
operational conditions of traditional gas turbines are further challenged to reach higher …

Runner–casing interactions are known to be major stress contributors during turbine
operation in nominal regimes. These synchronous vibrations must be properly understood to …

This paper presents an ultrasonic inspection methodology to improve the fitness-for-service
(FFS) assessment of hydraulic turbine runners after manufacturing or during the in-service …