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TECHNICAL PAPERS

Influence of Stator Clocking on the Unsteady Three-Dimensional Flow in a Two-Stage Turbine

[+] Author and Article Information
Dieter Bohn, Jing Ren

Institute of Steam and Gas Turbines, Aachen University, Templergraben 55, D-52056 Aachen, Germany

Michael Sell

ALSTOM Power, 5401 Baden, Switzerlande-mail: michael.sell@power.alstom.com

J. Turbomach 127(1), 156-163 (Feb 09, 2005) (8 pages) doi:10.1115/1.1812780 History: Received October 01, 2003; Revised March 01, 2004; Online February 09, 2005
Copyright © 2005 by ASME
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References

Eulitz, F., Engel, K., and Gebing, H., 1996, “Numerical Investigation of the Clocking Effects in a Multistage Turbine,” ASME paper no. 96-GT-26, Birminghan, UK.
Reinmoeller, U., Stephan, B., Schmidt, S., and Niehuis, R., 2001, “Clocking Effects in a 1.5 Stage Axial Turbine—Steady and Unsteady Experimental Investigations Supported by Numerical Simulations,” Proceedings of ASME TURBOEXPO 2001, 2001-GT-0304, June 4–7, 2001, New Orleans, LA.
Huber,  F. W., Johnson,  P. D., Sharma,  O. P., Staubach,  J. B., and Gaddis,  S. W., 1996, “Performance Improvement Through Indexing of Turbine Airfoils: Part I—Experimental Investigation,” ASME J. Turbomach., 118, pp. 630–635.
Griffin,  L. W., Huber,  F. W., and Sharma,  O. P., 1996, “Performance Improvement Through Indexing of Turbine Airfoils: Part II—Numerical Simulation,” ASME J. Turbomach., 118, pp. 636–642.
Dorney, D. J., Sharma, O. P., and Gundy-Burlet, K. L., 1998, “Physics of Airfoil Clocking in a High-Speed Axial Compressor,” ASME paper no. 98-GT-082.
Cizmas, P., and Dorney, D., 1998, “Parallel Computation of Turbine Blade Clocking,” AIAA paper no. 98-3598.
Bohn, D., Balkowski, I., Ma, H., Tümmers, C., and Sell, M., 2003, “Influence of Open and Closed Shroud Cavities on the Flowfield in a 2-Stage Turbine With Shrouded Blades,” GT2003-38436.
Schmatz, M. A., 1988, “Three-Dimensional Viscous Flow Simulations Using an Implicit Relaxation Scheme,” Notes on Numerical Fluid-Mechanics (NNFM), Vieweg, Braunschweig, Vol. 22, pp. 226–242.
Eberle, A., Schmatz, M. A., and Bissinger, N., 1990, “Generalized Flux Vectors for Hypersonic Shock-Capturing,” AIAA paper no. 90-0390.
Anderson, W. K., Thomas, J. L., and van Leer, B. A., 1985, “Comparison of Finite Volume Flux Vector Splitting for the Euler Equations,” AIAA paper no. 85-0122.
Baldwin, B. S., and Lomax, H., 1978, “Thin Layer Approximation and Algebraic Model for Separated Turbulent Flows,” AIAA paper no. 78-257.
Arnone, A., Marconcini, M., Pacciani, R., Schipani, C., and Spano, E., 2001, “Numerical Investigation of Airfoil Clocking in a Three-Stage Low Pressure Turbine,” ASME paper no. 2001-GT-0303, New Orleans, LA.
Dorney, D. J., Croft, R., Sondak, D., Stand, U., and Twardochleb, C., 1998, “Computational Study of Clocking an Embedded Stage in a 4-Stage Industrial Turbine,” ASME paper no. 2001-GT-0509.

Figures

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Stage configurations on the midspan
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Entropy distribution on the midspan section at the clocking position S1
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Entropy distribution on an axial section between the first stator and the first rotor at the clocking position S1
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Entropy distribution on an axial section between the first rotor and the second stator at the clocking position S1
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Entropy distribution on three radial sections (t/τ=0.2, clocking position S1)
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Temperature distribution on an axial section between the first rotor and the second stator at the clocking position S1
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Comparison of the total pressure distribution at measurement plane MP22
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Relative efficiency courses at three clocking positions
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Averaged relative efficiency distribution
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Entropy distribution on the midspan at the clocking position S2 (ηmax)
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Entropy distribution on the midspan at the clocking position S3 (ηmin)
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Entropy distribution on an axial section between the first rotor and the second stator at the clocking position S2 (ηmax)
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Entropy distribution on an axial section between the first rotor and the second stator at the clocking position S3 (ηmin)
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Static pressure distribution on the measurement plane MP22
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Velocity magnitude on the measurement plane MP22
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Temperature distribution on the measurement plane MP22
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Relative efficiency distribution on the measurement plane MP22

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