Modelling cavitation erosion risk in a hydraulic turbine

Hydro power generates a large proportion of Canada’s electricity, and is by far the largest source of renewable energy. Modern hydraulic turbines are highly optimized with respect to size (cost), power output and efficiency. One of the main factors limiting further efficiency increase is cavitation. Cavitation occurs where the local static pressure drops below vapor pressure causing the appearance of vapor bubbles much like the bubbles that appear in water when it is brought to boil. The presence of cavitation can easily be predicted with computational methods. However, not all types of cavitation cause damage. Recently, a new cavitation erosion prediction method has been published, promising the prediction of damage from the cavitation. This method will be implemented and tested for its effectiveness through the comparison of its predictions to known cavitation damage on existing hydraulic turbines.

Faculty Supervisor:

Susan Gaskin

Student:

Partner:

ANDRITZ Canada Inc.

Discipline:

Engineering

Sector:

Energy and Utilities

University:

McGill University

Program: