Turbomachinery calculations at highly off-design conditions

• Autorzy: Knutsen S. D. , Dahlhaug O. G. , Kjeldsen M. , Borresen Jr. B.
• Języki publikacji: EN

Abstrakty

EN

The performance of a reversible pump turbine close to runaway is important for the stability of a pumped storage plant. In this study CFD is used to predict the turbine characteristics. Good correspondence between the experimental and computational results is found when a simplified loss model is used to account for the components not present in the CFD model. Despite the promising results, more work is needed to verify the approach as a predictive tool.

Słowa kluczowe

EN

turbomachinery; turbine characteristics; speed-no-loadinstability; computational fluid dynamics CFD

PL

turbina; dynamika płynów; niestabilność

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2002
• Tom: Vol. 7, no 1
• Strony: 143--156
• Opis fizyczny: Bibliogr. 7 poz., tab., wykr.

Twórcy

autor

Knutsen S. D.

• Department of Thermal Energy and Hydropower, NTNU, NO-7491 Trondheim, NORWAY

autor

Dahlhaug O. G.

• Department of Thermal Energy and Hydropower, NTNU, NO-7491 Trondheim, NORWAY

autor

Kjeldsen M.

• Department of Thermal Energy and Hydropower, NTNU, NO-7491 Trondheim, NORWAY

autor

Borresen Jr. B.

• GE Hydro P.O.Box 125 NO-2027 Kjeller, Norway

Bibliografia

• [1] Adamczyk J.J. (1985): Model equation for simulating flows in multistage turbomachinery. - ASME, Gas Turbine Conference, Texas, USA, March 18-21, 1985, Paper No.85-GT-226, pp.1-13.
• [2] AEA Technology (2000): CFX-TASCflow 2.10. - Theory Documentation.
• [3] Borresen B. jr. (1994): Development and Validation of a Sub-Domain Method for the Calculation of Incompressible Three-Dimensional Flow: Application to Hydraulic Turbomachinery. - THÈSE No. 1323, École Polytechnique Fédérale de Lausanne.
• [4] Jernsletten J. (1995): Analysis of Non-Stationary Flow in a Francis Reversible Pump Turbine Runner. - Ph.D. Thesis, ITE Report No.1995.35, NTH, ISBN 82-7119- 746-0.
• [5] Knutsen S.D. (2000): CFD-Analyse av en Pumpeturbin-Turbinkarakteristikken. - Hevodoppgave (M.Sc Thesis), Report No.2000/57, Institute for Thermal Energy and Hydro Power, The Norwegian University of Science and Technology (NTNU).
• [6] Kreiss H.O. (1980): Problems with different time scales for partial differential equations. - Communications on Pure and Applied Mathematics, vol.33, pp.399-439.
• [7] Marx Y.P. (1997): Numerical Investigation of Impeller-Diffusion Interaction Mechanisms in a 2D Model of a Centrifugal Pump. - I \MHEF/LMF Technical Report No.T-97-15, École Polytechnique Fédérale de Lausanne.