Henri-Pascal Mombelli

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In the process of turbine modernizations, the investigation of the influences of water passage roughness on radial flow machine performance is crucial and validates the efficiency step up between reduced scale model and prototype. This study presents the s ...

For the refurbishment projects, one of the most important problems is to evaluate the economical efficiency of the project. It is difficult to estimate, with good accuracy, the hydraulic efficiency in situ for existing configurations and even more difficult to estimate the upgrading of the characteristics after refurbishment. The aim of this paper is to propose a procedure for performance measurement and for the analysis of a turbine characteristics applied on a refurbishment project. By comparative model t

The work presented in this paper details an original procedure developed in order to automatically build on-cam surfaces for double-regulated hydropower units such as Kaplan or bulb turbines. The proposed method allows a sparse exploration of the operating ...

Henri-Pascal Mombelli

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SURFACE ROUGHNESS IMPACT ON FRANCIS TURBINE PERFORMANCES AND PREDICTION OF EFFICIENCY STEP UP

Tests on Reduced Scale Models for the Refurbishment Projects of Hydroelectric Power Plants

Automated hill chart modeling procedure to estimate the performance of double regulated units

Surface Roughness Impact on Francis Turbine Performances and Prediction of Efficiency Step Up

Model Testing for Beauharnois Powerplant's refurbishment Project

Essais sur modèles réduits pour les projets de réhabilitation des centrales hydroélectriques

Model Testing for Refurbishment Projects

Instabilités des turbines Francis : essais et mesures détaillés sur modèle réduit

Parametric Analysis of High Load Vortex Rope

Model Testing for Upgrading and Refurbishment Projects

Universal testing station for reaction type hydraulic machines

Essais sur modèles réduits pour les projets de réhabilitation des centrales hydroélectriques = Studiu asupra modelelor reduse pentru projectele de retehnologizare a centralelor hidroelectrice

Similitude et effets d'échelle

Similitude and model testing