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TECHNICAL PAPERS

Fluid Dynamics of a Pre-Swirl Rotor-Stator System

[+] Author and Article Information
Youyou Yan

Aero, Civil and Mechanical Engineering, City University, London, Northampton Square, London EC1V 0HB, UK  

Mahmood Farzaneh Gord, Gary D. Lock, Michael Wilson, J. Michael Owen

Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, UK

J. Turbomach 125(4), 641-647 (Dec 01, 2003) (7 pages) doi:10.1115/1.1578502 History: Received November 14, 2001; Revised January 25, 2003; Online December 01, 2003
Copyright © 2003 by ASME
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References

Popp,  O., Zimmerman,  H., and Kutz,  J., 1998, “CFD Analysis of Cover-Plate Receiver Flow,” ASME J. Turbomach., 120, pp. 43–49.
Karabay,  H., Chen,  J. X., Pilbrow,  R., Wilson,  M., and Owen,  J. M., 1999, “Flow in a “Cover-Plate” Pre-Swirl Rotor-Stator System,” ASME J. Turbomach., 121, pp. 160–166.
Karabay,  H., Wilson,  M., and Owen,  J. M., 2001, “Predictions of Effect of Swirl on Flow and Heat Transfer in a Rotating Cavity,” Int. J. Heat Fluid Flow, 22(2), pp. 143–155.
Meierhofer, B., and Franklin, C. J., 1981, “An Investigation of a Pre-swirled Cooling Airflow to a Gas Turbine Disk by Measuring the Air Temperature in the Rotating Channels,” ASME Paper 81-GT-132.
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., 2001, “Discharge Coefficients of a Pre-Swirl System in Secondary Air Systems,” ASME Paper 2001-GT-122.
Owen, J. M., and Rogers, R. H., 1989, Flow and Heat Transfer in Rotating Disc Systems: Vol. 1, Rotor-Stator Systems, Research Studies Press, Taunton, UK and John Wiley, NY.
Launder,  B. E., and Sharma,  B. I., 1974, “Application of the Energy-Dissipation Model of Turbulence to Flow Near a Spinning Disc,” Lett. Heat Mass Transfer, 1, pp. 131–138.
Pilbrow,  R., Karabay,  H., Wilson,  M., and Owen,  J. M., 1999, “Heat Transfer in a “Cover-Plate” Pre-Swirl Rotating-Disc System,” ASME J. Turbomach., 121, pp. 249–256.

Figures

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(a) A cover-plate pre-swirl system (reproduced from 1); (b) a direct-transfer pre-swirl system (reproduced from 5)
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Schematic diagram of the rotor-stator experimental rig (not to scale)
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140×211×40 computational grid—(a) 140×211 axial×radial grid (b) 211×40 radial×tangential grid
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Computed velocity vectors in two tangential planes for Reϕ=0.78×106T,p=0.236 and βp=0.96—(a) inlet nozzle midplane, (b) midway between nozzles
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Measured and computed radial variation of pressure, Reϕ=0.78×106—(a) static pressure at stator surface, (b) total pressure at axial midplane (z/s=0.5) measured computed (N=24) □ λT,p=0.127,βp≈0.52, N=24 [[dashed_line]] ▵ λT,p=0.236,βp≈0.96, N=24 – • λT,p=0.229,βp≈1.86, N=12 [[dotted_line]]
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Effect of βp and λT,p on measured and computed variation of β (z/s=0.5) measured computed (N=24)(Reϕ≈0.78×106,1.2×106)(Reϕ=0.78×106) □, ⧖ λT,p≈0.127,βp≈0.52, N=24 [[dashed_line]] ▵, + λT,p≈0.236,βp≈0.96, N=24 – •, × λT,p≈0.229,βp≈1.86, N=12 [[dotted_line]]
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Measured variation of β∞,b with βp ([[dashed_line]] Eq. (4a), – Eq. (4b))
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Measured variation of CD with (a) λT,p, (b) β∞,b

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