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Turbomachinery calculations at highly off-design conditions

Knutsen S. D., Dahlhaug O. G., Kjeldsen M., Borresen Jr. B.

International Journal of Applied Mechanics and Engineering

2002

Vol. 7, no 1

143-156

The performance of a reversible pump turbine close to runaway is important for the stability of a pumped storage plant. In this study CFD is used to predict the turbine characteristics. Good correspondence between the experimental and computational results is found when a simplified loss model is used to account for the components not present in the CFD model. Despite the promising results, more work is needed to verify the approach as a predictive tool.