FEM-Flow Analysis in Hydraulic Turbomachinery Runners

by P. Jermann, Sulzer Escher Wyss, Zurich, Switzerland,
H. Keck, Sulzer Escher Wyss, Zurich, Switzerland,
J. Pestalozzi, Sulzer Escher Wyss, Zurich, Switzerland,

Document Type: Proceeding Paper

Part of: Waterpower '85


Finite element calculations of the flow through distributor and runner of hydraulic turbomachines are presented. The method is quasi-3D and inviscid, but the deviations from a potential flow connected with typical swirl distributions in turbomachines are taken into account. Examples of meridional and blade-to-blade calculations in a bulb turbine and a Francis turbine, including comparisons with experiments, show the versatility of the program and its usefulness for the practical runner design.

Subject Headings: Hydraulics | Finite element method | Potential flow | Comparative studies | Hydraulic design | Turbines | Mathematics | Flow distribution

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