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TECHNICAL PAPERS: Gas Turbines: Heat Transfer and Turbomachinery

Direct-Transfer Preswirl System: A One-Dimensional Modular Characterization of the Flow

[+] Author and Article Information
M. Dittmann, K. Dullenkopf, S. Wittig

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

J. Eng. Gas Turbines Power 127(2), 383-388 (Apr 15, 2005) (6 pages) doi:10.1115/1.1787514 History: Received October 01, 2002; Revised March 01, 2003; Online April 15, 2005
Copyright © 2005 by ASME
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References

Scricca, J. A., and Moore, K. D., 1997, “Effects of ‘Cooled’ Cooling Air on Pre-Swirl Nozzle Design,” Tech. Rep. NASA/CP-98-208527, Pratt & Whitney.
Meierhofer, B., and Franklin, C. J., 1981, “An Investigation of a Preswirled Cooling Airflow to a Turbine Disc by Measuring the Air Temperature in the Rotating Channels,” ASME Paper 81-GT-132.
El-Oun,  Z. B., and Owen,  J. M., 1988, “Pre-Swirl Blade-Cooling Effectiveness in an Adiabatic Rotor-Stator System,” ASME J. Turbomach., 111, pp. 522–529.
Wilson,  M., Pilbrow,  R., and Owen,  J. M., 1997, “Flow and Heat Transfer in a Pre-Swirl Rotor-Stator System,” ASME J. Turbomach., 119, pp. 364–373.
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.
Kline,  S., and McClintock,  F. A., 1953, “Describing Uncertainties in Single-Sample Experiments,” Mech. Eng. (Am. Soc. Mech. Eng.), 75, pp. 3–8.
Zimmermann, H., Kutz, J., and Fischer, R., 1998, “Air System Correlations Part 2: Rotating Holes and Two Phase Flow,” ASME Paper 98-GT-207.
Popp,  O., Zimmermann,  H., and Kutz,  J., 1998, “CFD-Analysis of Coverplate Receiver Flow,” ASME J. Turbomach., 120, pp. 43–49.
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,” 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal.
Wittig, S., Kim, S., Scherer, T., Jakoby, R., and Weißert, I., 1995, “Durchfluß an rotierenden Wellen- und Scheibenbohrungen und Wärmeübergang an rotierenden Wellen,” Forschungsvereinigung Verbrennungskraftmaschinen (FVV), Abschlußbericht, Vorhaben Nr. 465 und 536, Heft 574.
McGreehan,  W. F., and Schotsch,  M. J., 1988, “Flow Characteristics of Long Orifices With Rotation and Corner Radiusing,” ASME J. Turbomach., 110, pp. 213–217.

Figures

Grahic Jump Location
Setup of the preswirl rig
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Velocities in the absolute and relative frame of reference
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Discharge coefficients cDN for the preswirl nozzles
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Effective velocity ratio of the preswirl system
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Discharge coefficients cDR for receiver hole and a rotating orifice
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Effect of NR,1/d for NN=12,s1=10 mm,r/d=0.2
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Effect of r/d for NN=11,s1=10 mm,NR=4
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Effect of s1 for NN=12,NR=24,r/d=0.2
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Effect of ṁrad for NN=12,s1=10 mm,NR=4,r/d=0.0
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Cooling air total temperature in the relative frame of reference

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