Modernisation of the last stage in the low- pressure cylinder of a steam turbine using CFD and optimisation techniques

• Autorzy: Rusanov A. V. , Paschenko N. V. , Yakovlev V. A. , Yershov S. V.
• Konferencja: International Symposium SYMKOM Compressor & Turbine Flow Systems, Treory & Application Areas (15-17.09.2008; Łódź; Polska)
• Języki publikacji: EN

Abstrakty

EN

The results of gas dynamic improvement of the last stage in the low-pressure cylinder of a steam turbine are presented. The turbine stage performance and the 3D flow patterns were obtained with the CFD solver FlowER. Stage modernisation was carried out in two ways. First, stage blade sections were renovated, and then the 3D blade shape was optimised using the CFD and optimisation techniques. The optimised stage has stator blades with a compound lean at the hub and a compound sweep at the tip. The efficiency of the improved stage is higher by roughly 2 percent at nominal flow conditions and is up to 10 percent for low flow rate conditions as compared to that of the original stage.

Słowa kluczowe

EN

turbine stage; improvement; CFD; 3D flow; optimisation

PL

CFD; optymalizacja; turbina; przepływy

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
• Rocznik: 2008
• Tom: nr 133
• Strony: 291--298
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Rusanov A. V.

• Institute for Mechanical Engineering Problems of NAS of Ukraine,

autor

Paschenko N. V.

• Institute for Mechanical Engineering Problems of NAS of Ukraine,

autor

Yakovlev V. A.

• Institute for Mechanical Engineering Problems of NAS of Ukraine,

autor

Yershov S. V.

• Institute for Mechanical Engineering Problems of NAS of Ukraine,

Bibliografia

• [1] Torre A., Cecchi S., 2007, Latest Developments and Perspectives in the Optimised Design of LP Steam Turbines at ANSALDO, 7th European Conf. on Turbomash. Fluid Dynam. and Thermodynam., Athens, Greece, pp. 19–40.
• [2] Yershov S.V., and Rusanov A.V., 1996, “The Application Program Package FlowER For The Calculation Of 3D Viscous Flows Through Multi Stage Turbomachines“, Certificate Of State Registration Of Copyright, Ukrainian State Agency for Copyright and Related Rights, ΠA No 77, 19.02.1996 (in Ukrainian).
• [3] Lampart P., Rusanov A., Yershov S., Marcinkowski S., Gardzilewicz A., 2005, 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, Trans. ASME. J. Fluids Eng., No 1, pp. 83–93.
• [4] Lampart P., Yershov S., Rusanov A., 2002, Validation of turbomachinery flow solver on turbomachinery test cases, Intern. conf. SYMKOM'02: Compressor & turbine stage flow path theory, experiment & user verification, Cieplne Maszyny Przeplywowe. Turbomachinery, Politechnika Lodzka, Lodz, Poland, No. 122, pp. 63–70.
• [5] Wilcox D.C., 2004, Turbulence Modeling for CFD, 2nd ed. – DCW Industries, Inc., La Canada, California, 540 p.
• [6] Menter F.R., 1994, Two-equation eddy viscosity turbulence models for engineering applications, AIAA J., No 11, pp. 1299–1310.
• [7] Himmelblau D. M., 1972, Applied Nonlinear Programming, Mcgraw-Hill, Book. Company, New York, New York, 416 p.
• [8] Yershov S.V., 1994, The quasi-monotonous ENO scheme of increased accuracy for integrating Euler and Navier-Stokes equations, Mathematical Modelling, 6, No 11, p. 63–75 (in Russian).