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TECHNICAL PAPERS

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

[+] Author and Article Information
Piotr Lampart, Stanislaw Marcinkowski, Andrzej Gardzilewicz

Institute of Fluid Flow Machinery, Polish Academy of Sciences, ul. Fiszera 14, 80-231 Gdańsk, Poland

Andrey Rusanov, Sergey Yershov

Ukrainian National Academy of Sciences, 2/10 Pozharsky, 61046 Kharkov, UkraineFLower Ltd., 42/226 Tobolskaya, 61072 Kharkov, Ukraine

J. Fluids Eng 127(1), 83-93 (Mar 22, 2005) (11 pages) doi:10.1115/1.1852491 History: Received December 11, 2003; Revised October 06, 2004; Online March 22, 2005
Copyright © 2005 by ASME
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References

Sturmayr, A., and Hirsch, Ch., 2003, “Tabular IAPWS-95 Steam Properties Formulation With Switched Condensation Model in a 3D Navier-Stokes Solver,” Proc. 5th European Conf. on Turbomachinery, Prague, Czech Republic, March 17–22, pp. 729–740.
Bohn, D., Kerpicci, H., Ren, J., and Surken, N., 2001, “Heterogeneous and Teterogeneous Nucleation in a Nozzle Guide Vane of an LP Steam Turbine,” Proc. 4th European Conf. on Turbomachinery, Firenze, Italy, March 20–23, pp. 813–822.
Dykas,  S., 2001, “Numerical Calculation of Steam Condensing Flow,” TASK Quarterly, 5(4), pp. 519–535.
Chmielniak, T. J., Wróblewski, W., and Dykas, S., 1999, “Stem Flow Calculations in Turbine Channels,” Proc. 3rd European Conf. on Turbomachinery, March 2–5, London, UK, pp. 803–813.
Wróblewski,  W., 2000, “Calculations of the Condensing Water Steam Flows in Turbine Blade Cascades,” Turbulence,6–7, pp. 209–224.
Dykas, S., Goodheart, K., and Schnerr, G. H., 2003, “Numerical Study of Accurate and Efficient Modelling for Simulation of Condensing Flow in Transonic Steam Turbines,” Proc. 5th European Conf. on Turbomachinery, Prague, Czech Republic, March 17–22, pp. 751–760.
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, February 19.
Menter,  F. R., 1994, “Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications,” AIAA J., 32(8), pp. 1598–1605.
Yershov,  S. V., 1994, “The Quasi-Monotonous ENO Scheme of Increased Accuracy for Integrating Euler and Navier-Stokes Equations,” Math. Model.,6(11), pp. 58–64 (in Russian).
Yershov,  S. V., Rusanov,  A. V., Shapochka,  A., Lampart,  P., Świrydczuk,  J., and Gardzilewicz,  A., 2002, “Shape Optimization of Two Turbine Stages Using a Deformed Polyhedron Method and a 3D RANS Solver,” Proc. Inst. Mech. Eng., Part A., J. Power Energy,216(2), pp. 203–213.
Lampart, P., Yershov, S., and Rusanov, A., “Validation of Turbomachinery Flow Solver on Turbomachinery Test Cases,” 2002, Cieplne Maszyny Przeplywowe (Turbomachinery), 122 , pp. 63–70.
Lampart,  P., Świrydczuk,  J., and Gardzilewicz,  A., 2001, “On the Prediction of Flow Patterns and Losses in HP Axial Turbine Stages Using 3D RANS Solver and Two Turbulence Models,” TASK Quarterly, 5(2), pp. 191–206.
Denton,  J. D., 1993, “Loss Mechanisms in Turbomachines,” ASME J. Turbomach., 115, pp. 621–656.
Lampart, P., Yershov, S., Rusanov, A., and Szymaniak, M., 2004, “Tip Leakage/Main Flow Interactions in Multi-Stage HP Turbines With Short Height Blading,” ASME Paper no. GT2004-53882.
Marcinkowski, S., 1998, “Results of Extended Flow Measurements in the LP Part of 18K370 Steam Turbine in the Belchatów Power Station,” Rep. Institute of Fluid Flow Machinery, Gdańsk, No. 292/98 (in Polish).
Gardzilewicz,  A., and Marcinkowski,  S., 1995, “Diagnosis of LP Steam Turbines. Prospects of a Measuring Technique,” ASME PWR,28(3), pp. 349–358.
Marcinkowski, S., 1985, “Universal Measurement Probe for Tests on Wet Steam Flow in Turbines,” Rep. Institute of Fluid Flow Machinery, Gdańsk, No. 50/85 (in Polish).
Wierciński, Z., 1998, “Calibration of Disc Probes in the Wind Tunnel for Wet Steam Flow Measurements in Low-Pressure Turbines,” Rep. Diagnostyka Maszyn Ltd., Gdańsk, No. 1/98 (in Polish).
Gardzilewicz, A., Łuniewicz, B., and Stojanov, A., 1995, “Streamline Curvature Calculation of Flow Through the Steam Turbines Stages With Diffusers,” Proc. Int. Conf. SYMKOM’95, Łódż, Poland.
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Figures

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Computational domains in code FlowER—computational domain with radial gaps over unshrouded blade tips (top), computational domain with source/sink-type permeable boundaries to simulate the effect of leakage over shrouded blade tips and windage flows (bottom); S—stator, R—rotor
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LP part of 360 MW steam turbine in meridional view with measuring instrumentation
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Measuring probe inside the LP turbine downstream of the last stage rotor (top). Relative dimensions of the probe (bottom).
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Expansion line in an LP turbine for evaluation of efficiency from measurement data
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Computational grid for the five-stage LP turbine in meridional view at mid blade-to-blade distance and fragment of the grid in blade-to-blade view at mid-span
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Mass flow rate balance in blade-to-blade channels of subsequent turbine blade rows (numbers from 0.0 to 1.0 show nondimensional axial distance within subsequent blade rows)
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Computed velocity vectors at mid blade-to-blade distance
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Tip leakage flow over shrouded blades of rotor 1: velocity vectors in meridional view at mid blade-to-blade distance (left) and total pressure contours in circumferential view 25% of rotor axial chord downstream of the trailing edge (right)
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Tip leakage flow over unshrouded blades of rotor 5: total pressure contours in circumferential view 5% of rotor axial chord upstream of the rotor trailing edge (left), and 25% of rotor axial chord downstream of the trailing edge (right)
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Hub leakage flow under shrouded blades of stator 5: velocity vectors in meridional view at mid blade-to-blade distance
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Mach number contours in stages 3 and 5 in blade-to-blade view at mid-span
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Spanwise distribution of reaction in stages 3, 4, and 5
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Spanwise distribution of enthalpy losses in stages 3, 4, and 5 (the leaving energy not treated as a loss)
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Comparison of experimental and computed total and static pressure (left), meridional and swirl angle (right) downstream of stages 3 (top), 4 (center), and 5 (bottom)

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