Hydraulic Turbomachines (EPFL)

Abstract

Mastering the scientific design of a hydraulic machine, pump and turbine, by using the most advanced engineering design tools . For each chapters the theoretical basis are first established and then practical solutions are discussed with the help of recent design examples.

Objective

Mastering the scientific design of a hydraulic machine, pump and turbine, by using the most advanced engineering design tools . For each chapters the theoretical basis are first established and then practical solutions are discussed with the help of recent design examples.

Content

- Turbomachine equations, mechanical power balance in a hydraulic machines, moment of momentum balance applied to the runner/impeller, generalized Euler equation. - Hydraulic characteristic of a reaction turbine, a Pelton turbine and a pump, losses and efficiencies of a turbomachine, real hydraulic characteristics. - Similtude laws, non dimensional coefficients, reduced scale model testing, scale effects. - Cavitation, hydraulic machine setting, operating range, adaptation to the piping system, operating stability, start stop transient operation, runaway. - Reaction turbine design: general procedure, general project layout, design of a Francis runner, design of the spiral casing and the distributor, draft tube role, CFD validation of the design, design fix, reduced scale model experimental validation. - Pelton turbine design: general procedure, project layout, injector design, bucket design, mechanical problems. - Centrifugal pump design: general architecture, energetic loss model in the diffuser and/or the volute, volute design, operating stability.

Resources