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2009 | 16 | 2 |
Tytuł artykułu

Two vortex interaction patterns in a turbine rotor

Autorzy
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The article analyses the unsteady interaction of vortex structures in a turbine rotor passage. In the form of sample cases, two high-pressure steam turbine stages are examined: a standard stage, used as the reference, which reveals regular performance characteristics and distributions of flow parameters, and a low-efficiency stage, in which a large separation zone is observed in the rear part of the rotor passage. In the latter case the combined interaction of all vortices has been found to take an extremely complex course and be a source of remarkable flow fluctuations. The methodology applied for extracting particular vortex structures from the general flow pattern bases on comparing entropy distributions with corresponding velocity vectors. The reported vortex interaction patterns are believed to be representative for a variety of turbine constructions of both land, and marine applications
Słowa kluczowe
Wydawca
-
Rocznik
Tom
16
Numer
2
Opis fizyczny
p.45-53,fig.,ref.
Twórcy
  • Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-952 Gdansk, Poland
Bibliografia
  • 1. Goldstein R.J., Spores R.A.: Turbulent transport on the endwall in the region between adjacent turbine blades, Trans. ASME, J. Heat Transfer, vol. 110, 1988
  • 2. Doerffer P., Amecke J.: Secondary flow control and stream-wise vortices formation, ASME Paper. 94-GT-376, 1994
  • 3. Wang H.P., Olson S.J., Goldstein R.J., Eckert E.R.G.: Flow visualization of a linear turbine cascade of high performance turbine blades, J. Fluid Mech., vol. 134, 1997
  • 4. Swirydczuk J.: Grid resolution in numeric analyses of stator/rotor interactions (in Polish), SYSTEMS Journal of Transdisciplinary Systems Science, vol. 11, 2006
  • 5. Lardeau, S., Leschziner, M.A. : Unsteady RANS modelling of wake-blade interaction: computational requirements and limitations”, Computers & Fluids, vol. 34, 2005
  • 6. Yershov, S., Rusanov, A., Gardzilewicz, A., Lampart, P., Swirydczuk, J.: Numerical Simulation of 3D Flow in Axial Turbomachines, TASK Quarterly, vol. 2, 1998
  • 7. Lampart P. , Swirydczuk J., Gardzilewicz A.: On the prediction of flow patterns and losses in an HP axial turbine stages using 3D RANS solver with two turbulence models, TASK Quarterly vol. 5, 2001
  • 8. Lampart P., Rusanov A., Yershov S., Marcinkowski S., Gardzilewicz A.: Validation of a 3D RANS Solver With a State Equation of Thermally Perfect and Calorically Imperfect Gas on a Multi-Stage Low-Pressure Steam Turbine Flow, ASME J. Fluids Engineering, vol. 127, 2005
  • 9. Swirydczuk J.: Vortex Dynamics of the Stator Wake-Rotor Cascade Interaction, ASME J. Fluids Engineering, vol. 124, 2002
  • 10. Kost F., Hummel F., Tiedemann M.: Investigation of the Unsteady Rotor Flow Field in a Single HP Turbine Stage, Proc. ASME TURBO EXPO 2000, May 8-11, Munich, Germany, 2000
  • 11. Doerffer P., Rachwalski J., Magagnato F.: Numerical Investigation of the Secondary Flow Development in Turbine Cascade, TASK Quarterly, vol. 5, 2001.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-076b8d86-3c2a-4e2d-94ea-487cf0361e9c
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