A state equation of thermally perfect and calorically imperfect gas is implemented in a 3D RANS solver for turbomachinery flow applications. The specific heats are assumed as linear functions of temperature. The model is validated on a five-stage low-pressure steam turbine. The computational results exhibit the process of expansion in the turbine. The computed and measured distributions of flow parameters in axial gaps downstream of subsequent turbine stages are found to agree reasonably well. It is also shown that the obtained numerical solution gives considerable improvement over the solution based on the thermally and calorically perfect gas model.
Issue Section:
Technical Papers
1.
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.
2.
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.
3.
Dykas
, S.
, 2001
, “Numerical Calculation of Steam Condensing Flow
,” TASK Quarterly
, 5
(4
), pp. 519
–535
.4.
Chmielniak, T. J., Wro´blewski, 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.
5.
Wro´blewski
, W.
, 2000
, “Calculations of the Condensing Water Steam Flows in Turbine Blade Cascades
,” Turbulence
, 6–7
, pp. 209
–224
.6.
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.
7.
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.
8.
Menter
, F. R.
, 1994
, “Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications
,” AIAA J.
, 32
(8
), pp. 1598
–1605
.9.
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).10.
Yershov
, S. V.
, Rusanov
, A. V.
, Shapochka
, A.
, Lampart
, P.
, S´wirydczuk
, 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
.11.
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.
12.
Lampart
, P.
, S´wirydczuk
, 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
.13.
Denton
, J. D.
, 1993
, “Loss Mechanisms in Turbomachines
,” ASME J. Turbomach.
, 115
, pp. 621
–656
.14.
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.
15.
Marcinkowski, S., 1998, “Results of Extended Flow Measurements in the LP Part of 18K370 Steam Turbine in the Belchato´w Power Station,” Rep. Institute of Fluid Flow Machinery, Gdan´sk, No. 292/98 (in Polish).
16.
Gardzilewicz
, A.
, and Marcinkowski
, S.
, 1995
, “Diagnosis of LP Steam Turbines. Prospects of a Measuring Technique
,” ASME PWR
, 28
(3
), pp. 349
–358
.17.
Marcinkowski, S., 1985, “Universal Measurement Probe for Tests on Wet Steam Flow in Turbines,” Rep. Institute of Fluid Flow Machinery, Gdan´sk, No. 50/85 (in Polish).
18.
Wiercin´ski, Z., 1998, “Calibration of Disc Probes in the Wind Tunnel for Wet Steam Flow Measurements in Low-Pressure Turbines,” Rep. Diagnostyka Maszyn Ltd., Gdan´sk, No. 1/98 (in Polish).
19.
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, Ło´dz˙, Poland.
20.
Moore, M. J., Jackson, R., Wood, N. B., Langford, R. W., Walters, P. T., and Keeley, K. R., 1979, “A Method of Measuring Stage Efficiency in Operational Wet Steam Turbines,” Proc. Inst. Mech. Eng. C179/79.
21.
Krzyz˙anowski, J., and Marcinkowski, S., 1997, “On Efficiency Measurements for Large Steam Turbine LP Stages,” Proc. 2nd European Conf. on Turbomachinery, March 5–7, Antwerpen, Belgium, pp. 29–36.
22.
Gardzilewicz, A., 1984, “Selected Problems of Computer-Aided Design of Steam Turbines and Heat Cycles,” Rep. Institute of Fluid Flow Machinery, Gdan´sk, No. 161/84 (in Polish).
23.
Lampart, P., 2000, “The Application of Stator Blade Compound Lean at Root to Increase the Efficiency of LP Turbine Stages From Low to Nominal Load,” ASME Paper no. IJPGC2000-15015.
24.
Gardzilewicz
, A.
, 1977
, “Isentropic Expansion Coefficient in Wet Steam Near the Saturation Line
,” Trans. Inst. Fluid Flow Mach.
, 57
, pp. 31
–44
(in Polish).Copyright © 2005
by ASME
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