Flow Calculation in a Francis Runner

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by E. Göde, Sulzer-Escher Wyss AG, Zurich, Switzerland,
J. Pestalozzi, Sulzer-Escher Wyss AG, Zurich, Switzerland,

Document Type: Proceeding Paper

Part of: Water Power '87:

Abstract: The flow through a Francis runner has been analysed theoretically. The flow calculations have been carried out by use of an inviscid 3D computational method solving the Euler-Equations. It is an explicit time-marching Finite Volume approach using a model for artificial viscosity and artificial compressibility in order to cope with internal hydraulic flow problems. The results are compared with calculations carried out with a Quasi-3D method using the Finite Element technique. This Q3D approach deals with an iteration procedure between meridional and blade-to-blade flow.

Subject Headings: Hydraulic models | Finite volume method | Three-dimensional flow | Computing in civil engineering | Finite element method | Water flow | Viscosity |

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