Francis Turbine
The CENTAUR integrated system was used to produce a hybrid grid for the Francis turbine case study. The procedure followed and the timings corresponding to each phase are summarized below:
GEOMETRY PREPARATION:
Auto grouping / setup of interfaces:
10 minutes Cleaning and geometry editing:
15 minutesMESH GENERATION:
Hybrid mesh consisting of approx. 20M elements:
30 minutesDESIGN OPTIMIZATION:
Preparation of the module to be redesigned (distributor):
5-10 minutes Parts-based meshing:
5 minutes (only one part is being remeshed)
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Hybrid mesh for the runner and stay vanes
(mesh scales calculated automatically - no user interaction) |
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Fully hexahedral mesh for the draft tube |
Other tools in CENTAUR suitable for relevant applications:
- Mesh cloning: The mesh for a single blade / vane is repeated automatically to form the entire geometry. The mesh generation time is significantly reduced.
- Modular meshing: Faster and more accurate redesigns by re-meshing only the parts of the geometry that have been changed.
- Mesh deformation (e.g. adjustment of blade angles).
- Solution-based mesh adaptation (e.g. y-plus based near wall redistribution).
