Unsteady flow simulation in hydraulic machinery

• Autorzy: Ruprecht A.
• Konferencja: Seminar/summer school on "CFD for turbomachinery applications" (01-03.09.2001, Gdańsk, Poland)
• Języki publikacji: EN

Abstrakty

EN

In the field of hydraulic machinery Computational Fluid Dynamics (CFD) is routinely used today in research and development as well as in the daily design phase. Today in industry mostly steady state simulations are applied. In this paper, however, an overview of unsteady simulations is shown for different applications. The presented examples contain problems with self excited unsteadiness, vortex rope in the draft tube, as well as applications with externally forced unsteadiness by changing or moving geometries and rotor-stator interactions. For the shown applications the requirements, potential and limitations of unsteady flow analysis are assessed.

Słowa kluczowe

EN

unsteady RANS; parallel computing; hydro turbine; rotor-stator interaction; vortex rope

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2002
• Tom: Vol. 6, No 1
• Strony: 187--208
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Ruprecht A.

• Institute of Fluid Mechanics and Hydraulic Machinery, University of Stuttgart, Pfaffenwaldring 10, D-70550 Stuttgart, Germany

Bibliografia

• [1] Proc. GAMM-Workshop on 3D Computation of Incompressible Internal Flows, 1989, Lausanne, Switzerland
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• [10] Ruprecht A, Bauer C, Gentner C and Lein G 1999 ASME PVP 397-2 173
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• [12] Kim S-W and Chen C-P 1989 Numerical Heat Transfer, Part B 16 193
• [13] Ruprecht A, Heitele M, Helmrich T, Moser W and Aschenbrenner T 2000 Proc. 20th IAHR Symposium on Hydraulic Machinery and Cavitation, Charlotte, USA, paper CFD-S03
• [14] Gentner Ch 2000 Experimentelle und numerische Untersuchung der instationaren Stromung in einer Axialturbiney PhD Thesis, Univcrsitat Stuttgart
• [15] Bauer C 2001 Instationare Berechnung einer hydraulischen Axialturbine unter Berucksichtigung der Interaktion zwischen Leit- und Laufrad, PhD Thesis, Universiteit Stuttgart