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TECHNICAL PAPERS: Gas Turbines: Heat Transfer and Turbomachinery

Cooling Air Temperature Reduction in a Direct Transfer Preswirl System

[+] Author and Article Information
T. Geis, M. Dittmann, K. Dullenkopf

Lehrstuhl und Institut fur Thermische Strömungsmaschinen, University of Karlsruhe, 76128 Karlsruhe, Germany

J. Eng. Gas Turbines Power 126(4), 809-815 (Nov 24, 2004) (7 pages) doi:10.1115/1.1765124 History: Received October 01, 2002; Revised March 01, 2003; Online November 24, 2004
Copyright © 2004 by ASME
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References

Karabay,  H., Chen,  J.-X., Pilbrow,  R., Wilson,  M., and Owen,  J. M., 1999, “Flow in a “Cover-Plate” Preswirl Rotor-Stator System,” ASME J. Turbomach., 121, pp. 160–166.
Popp,  O., Zimmermann,  H., and Kutz,  J., 1998, “CFD Analysis of Coverplate Receiver Flow,” ASME J. Turbomach., 120, pp. 43–49.
Dittmann,  M., Geis,  T., Schramm,  V., Kim,  S., and Wittig,  S., 2002, “Discharge Coefficients of a Preswirl System in Secondary Air Systems,” ASME J. Turbomach., 124, pp. 119–124.
Wilson,  M., Pilbrow,  R., and Owen,  J. M., 1997, “Flow and Heat Transfer in a Preswirl Rotor-Stator System,” ASME J. Turbomach., 119, pp. 364–373.
El-Oun,  Z. B., and Owen,  J. M., 1989, “Pre-swirl Blade-Cooling Effectiveness in an Adiabatic Rotor-Stator System,” ASME J. Turbomach., 111, pp. 522–529.
Wilson, M., and Owen, J. M., 1994, “Axisymmetric Computations of Flow and Heat Transfer in a Pre-Swirl Rotor-Stator System,” presented at the First International Conference on Flow Interaction, Hong Kong.
El-Oun,  Z. B., Neller,  P. H., and Turner,  A. B., 1988, “Sealing of a Shrouded Rotor-Stator System with Preswirl Coolant,” ASME J. Turbomach., 110, pp. 218–225.
Geis, T., Rottenkolber, G., Dittmann, M., Richter, B., Dullenkopf, K., and Wittig, S., 2002, “Endoscopic PIV-Measurements in an Enclosed Rotor-Stator System With Pre-Swirled Cooling Air,” Proceedings of the 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics, July 8–11.
Meierhofer, B., and Franklin, C. J., 1981, “An Investigation of the Preswirled Cooling Airflow of a Turbine Disc by Measuring the Air Temperature in the Rotating Channels,” ASME Paper No. 81-GT-132.
Karabay, H., Owen, J. M., and Wilson, M., 2001, “Approximate Solutions for Flow and Heat Transfer in Pre-Swirl Rotating-Disc Systems,” ASME Paper No. 2001-GT-0200.
Eck, B., 1981, Technische Strömungslehre, Sechste Auflage, Springer-Verlag, Berlin.
Schoen, J., 1951, “Die Temperaturmessung in strömenden Gasen,” Archiv für Technisches Messen V2165-1.
Hottel,  H. C., and Kalitinsky,  A., 1945, “Temperature Measurements in High-Velocity Air Streams,” ASME J. Appl. Mech., 67, pp. A25–A32.
Goldstein,  S., 1935, “On the Resistance to the Rotation of a Disc Immersed in a Fluid,” Proc. Cambridge Philos. Soc., 31, pp. 232–241.

Figures

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Details of preswirl chamber, (dimensions in mm)
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Instrumentation of the receiver holes
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Detailed view of one total temperature probe
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Measured recovery factors for three cylindrical stagnation probes of equal shape
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Flow velocities inside the preswirl chamber
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Total temperatures (s=10 mm,c/d=0.04)
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Nondimensional temperature reduction (s=10 mm,c/d=0.04)
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Temperature elevation due to losses inside preswirl cavity and nozzle
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Comparison between measured and theoretical temperatures—effect of β̄eff and Mrotor
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Moment on rotor and corresponding temperature elevation

Tables

Errata

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