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TECHNICAL PAPERS: Gas Turbines: Turbomachinery

Investigation of Flow in a Steam Turbine Exhaust Hood With/Without Turbine Exit Conditions Simulated

[+] Author and Article Information
J. J. Liu, Y. Q. Cui, H. D. Jiang

Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, Beijing 100080, P. R. China

J. Eng. Gas Turbines Power 125(1), 292-299 (Dec 27, 2002) (8 pages) doi:10.1115/1.1499726 History: Received December 01, 2000; Revised March 01, 2001; Online December 27, 2002
Copyright © 2003 by ASME
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References

Zaryankin,  A. E., Zatsepin,  M. F., and Shakh,  R. K. D., 1966, “Effect of the Geometrical Parameters on the Operation of Annular Mixed Flow Diffusers,” Therm. Eng.,13, pp. 39–43.
Owczarek, J. A., Warnock, A. S., and Malik, P., 1989, “A Low Pressure Turbine Exhaust End Flow Model Study,” Latest Advances in Steam Turbine Design, Blading, Repairs, Condition, Assessment, and Condenser Interactions, D. M. Rasmussen, ed., ASME, New York, 7 , pp. 77–88.
Gray, L., Sandhu, S. S., Davids, J., and Southal, L. R., 1989, “Technical Considerations in Optimizing Blade-Exhaust Hood Performance for Low Pressure Steam Turbines,” Latest Advances in Steam Turbine Design, Blading, Repairs, Condition, Assessment, and Condenser Interactions, D. M. Rasmussen, ed., ASME, New York, 7 , pp. 89–97.
Tindell,  R. H., Alston,  T. M., Sarro,  C. A., Stegmann,  G. C., Gray,  L., and Davids,  J., 1996, “Computational Fluid Dynamics Analysis of a Steam Power Plant Low Pressure Turbine Downward Exhaust Hood,” ASME J. Eng. Gas Turbines Power, 118, pp. 214–224.
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Benim, A. C., Geiger, M., Doehler, S., Schoenenberger, M., and Roemer, H., 1995, “Modeling the Flow in the Exhaust Hood of Steam Turbines Under Consideration of Turbine-Exhaust Hood Interaction,” First European Congress on Turbomachinery Fluid Dynamics and Thermodynamics Aspects, Mar. 1–3.
Liu, J. J., 1998, “The Calculation of Asymmetric Flow in Turbine Exhaust Systems,” Ph.D thesis, Cambridge University Engineering Department, Cambridge, United Kingdom.
Roe,  P. L., 1981, “Approximate Riemann Solvers, Parameter Vectors and Difference Scheme,” J. Comput. Phys., 43, pp. 357–372.
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Figures

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General arrangement of the rig
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Schematic of the test section
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Diagram of computational domain
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Three-dimensional hood mesh and a two-dimensional cut
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Static pressure coefficient distributions
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Velocity distributions at diffuser inlet, θ=90 deg
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Velocity distributions at diffuser outlet, θ=90 deg
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Comparisons of velocity field at model outlet
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Streamlines in the hood
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P0 and α distributions at model inlet, θ=0 deg
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P0 and α distributions at model inlet, θ=90 deg
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Velocity vectors at model inlet
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Mach contours at model inlet
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Stream traces at section of θ=0 deg
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Stream traces at section of θ=90 deg
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Computed Cpr within the diffuser and collector

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