Publications by Alexandre Perrig

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The design of Pelton turbines has always been more difficult than that of reaction turbines, and their performances lower. Indeed, the Pelton turbines combine 4 types of flows: (i) confined, steady-state flow in the piping systems and injector, (ii) free w ...

Flow visualizations using endoscopes in a 21-bucket single-injector reduced scale Pelton turbine are performed for 2 operating points. 2 types of visualizations are performed with a CMOS high-speed camera: (i) an onboard visualization of the flow in the bu ...

This paper deals with flow investigations using endoscopes in a single-injector reduced scale Pelton turbine performed with a CMOS high-speed camera. Both onboard and external visualizations techniques of the flow in a bucket are presented. The flow observ ...

The aim of the paper is to present the results of investigations conducted on the free surface flow in a Pelton turbine model bucket. Unsteady numerical simulations, based on the two-phase homogeneous model, are performed together with wall pressure measur ...

The flow in the Pelton turbine bucket is three-dimensional, unsteady, turbulent, features a free surface, and is influenced by the rotation-induced forces. It is therefore difficult to investigate how the energy transfer takes place between the water flow ...

Alexandre Perrig

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Hydrodynamics of the free surface flow in Pelton turbine buckets

Onboard Flow Visualization in a Pelton Turbine Bucket

High Speed Flow Visualisation of an Impinging Jet on a Pelton Turbine Bucket

Flow in a Pelton Turbine Bucket: Numerical and Experimental Investigations

Numerical Flow Analysis in a Pelton Turbine Bucket

Etude numérique des effets de la coupe de Donaldson et des moyens de les modéliser