000059064 001__ 59064
000059064 005__ 20190812204857.0
000059064 037__ $$aCONF
000059064 245__ $$aSurface Parametrization of a Francis Runner Turbine for Optimum Design
000059064 260__ $$bInternational Association For Hydraulic Research$$c2004
000059064 269__ $$a2004
000059064 300__ $$a10
000059064 336__ $$aConference Papers
000059064 490__ $$aDesign Methods Turbines$$vA3-3
000059064 520__ $$aThe aim of this paper is to apply a surface parameterization to a blade. This geometric representation should be used as a practical tool in the process of design optimization. Most parameterizations are based on blade section approaches. The parameters are typically angles, lengths that have a clear meaning to the hydraulic designer. Spanwise functions are sometimes used to ensure coherence between the sections and the smoothness of the constructed blade surfaces. Here, the section-to-section approach is replaced by a purely surface method. The blade is modelled using a camber surface and thickness distributions, and the design parameters are kept as close as possible to their original physical meaning. Smooth blade surfaces are ensured, and a reduced number of variables are sufficient to describe realistic designs. The present line of research aims to introduce a surface parameterization approach, which provides a representation of the blade. One of the benefits of this methodology is the reduction of design parameters involved as this approach is no longer section dependent. Other advantages reside in the easiness to obtain smooth geometries. Finally, it is also important to point out that data exchange between programs (i.e. CAD, Mesh Generator) may now use surface representation. This entails that subjective reconstruction of this surface is no longer necessary. As a conclusion, with our approach and the reduction of design parameters, the design optimization process becomes shorter in terms of time and effort. In this sense, preliminary tests of geometry optimization will be presented.
000059064 700__ $$aFerrando, Lluis
000059064 700__ $$g107927$$aKueny, Jean-Louis$$0241013
000059064 700__ $$g104417$$aAvellan, François$$0241012
000059064 700__ $$aPedretti, Camille
000059064 700__ $$aTomas, Laurent
000059064 7112_ $$dJune 29 – July 2, 2004$$cStockholm, Sweden$$a22nd IAHR Symposium on Hydraulic Machinery and Systems
000059064 773__ $$tProceedings of the 22nd IAHR Symposium on Hydraulic Machinery and Systems$$q1-10$$j1
000059064 8564_ $$zn/a$$uhttps://infoscience.epfl.ch/record/59064/files/EVAPU_04_3.pdf$$s646593
000059064 8564_ $$uhttps://infoscience.epfl.ch/record/59064/files/Surface%20Parametrization%20of%20a%20Francis%20Runner%20Turbine%20for%20Optimum%20Design.pdf$$s436391
000059064 8564_ $$xpdfa$$uhttps://infoscience.epfl.ch/record/59064/files/Surface%20Parametrization%20of%20a%20Francis%20Runner%20Turbine%20for%20Optimum%20Design.pdf?subformat=pdfa$$s1616403
000059064 8560_ $$femilie.reynaud@epfl.ch
000059064 909C0 $$xU10309$$pLMH$$0252135
000059064 909CO $$ooai:infoscience.tind.io:59064$$qGLOBAL_SET$$pconf$$pSTI
000059064 937__ $$aLMH-CONF-2004-006
000059064 970__ $$a1448/LMH
000059064 973__ $$rREVIEWED$$aEPFL
000059064 980__ $$aCONF