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Warianty tytułu
Konferencja
International Symposium SYMKOM Compressor & Turbine Flow Systems, Treory & Application Areas (21-23.09.2005; Łódź; Polska)
Języki publikacji
Abstrakty
3D blading for the exit stage of a large power steam turbine was optimised based on direct constrained optimisation on coarse grids using a simplex method and a RANS solver with the Baldwin-Lomax turbulence model and state equation for perfect gas. The process of optimisation yielded new designs with changed 3D stacking lines of stator blades, including compound lean and sweep of stator blades. The results of optimisation are validated in this paper by 3D RANS computations on refined grids with the κ-ω SST turbulence model and perfect gas equation, or alternatively the real gas model without or with condensation. The paper concentrates on differences in flow fields and stage characteristics obtained from both gas models to estimate the quality of coarse-grid perfect-gas optimisation.
Słowa kluczowe
Rocznik
Tom
Strony
155--166
Opis fizyczny
Bibliogr. 15 poz.
Twórcy
autor
- Silesian University of Technology, Gliwice
autor
- The Szewalski Institute of Fluid Flow Machinery, Gdańsk
Bibliografia
- [1] Baldwin B.S., and Lomax H., 1978, “Thin layer approximation and algebraic model for separated turbulent flows”, AIAA Pap. 78-257.
- [2] Chmielniak T., Wróblewski W., Dykas S., and Łukowicz H, 2005, “Losses prediction in the wet steam flow through the rotor blade row using different numerical methods”, Proc. 6th Europ. Conf. Turbomachinery, March 7-11, Lille, France.
- [3] Denton, 1993, “Loss mechanisms in turbomachines”, Trans. ASME, J. Turbomachinery, Vol. 115, pp. 621-656.
- [4] Dykas S., 2001, “Numerical calculation of the steam condensing flow”, TASK Quarterly, Vol. 5, No 4, pp. 519,535.
- [5] Frenkel J., 1955, “Kinetic Theory of Liquids”, Dover Publ., New York
- [6] Fuchs N.A., and Satugin A.G., 1971, “High-Dispersed Aerosols”, Topics in Current Aerosols Research, Eds. G.M Hidy J.R. Brock, Pergamon Press, London
- [7] Lampart P., and Yershov S., 2003, “Direct constrained CFD-based optimisation of 3D blading for the exit stage of a large power steam turbine”, Trans. AMSE - J. Eng. Gas Turbines & Power, Vol. 125, No. 1, pp. 385-390.
- [8] Lampart P., 2002, “Numerical optimisation of stator blade sweep and lean in an LP turbine stage”, ASME Pap. IJPGC2002-26161.
- [9] Menter F.R., 1994, “Two-equation eddy-viscosity turbulence models for engineering applications”, AIAA J., Vol. 32, No. 8, pp. 1598-1605.
- [10] Nelder J.A., and Mead R., 1965, “A simplex method for function minimisation”, Computer J., Vol. 7, No. 1, pp. 308-313.
- [11] White A.J., Young J.B., and Walters P.T., 1996, “Experimental validation of condensing flow theory for a stationary cascade of steam turbine blades”, Phil. Trans. R. Soc. Lond. A., 354-59.
- [12] Wróblewski W., 2000, “Numerical simulation of the flow phenomena in thermal tur-bines”, ZN Politechniki Śląskiej, s. Energetyka 132 (in Polish).
- [13] Yershov S., and Rusanov A., 1996, “The application package FlowER for the calculation of 3D viscous flows through multi-stage turbomachinery”, Certificate of state registration of copyright, Ukrainian state agency of copyright and related rights.
- [14] Yershov S., Rusanov A., Gardzilewicz A., Lampart P, and Świrydczuk J., 1998, “Numerical simulation of 3D flow in axial turbomachines”, TASK Quarterly, Vol. 2, No. 2, pp. 319-347.
- [15] Yershov S., Shapochka A., and Rusanov A., 2000, “3D shaping of turbine blading based on 3D solutions of viscous compressible flow and optimisation”, Proc. Conf. Improvements in turbomachinery using methods of mathematical and physical modelling, Kharkov-Zmiev, Ukraine, September 18-22, pp. 171-178 (in Russian).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-LOD2-0007-0016