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TECHNICAL PAPERS

Three Component Velocity Field Measurements in the Stagnation Region of a Film Cooled Turbine Vane

[+] Author and Article Information
Marc D. Polanka, J. Michael Cutbirth, David G. Bogard

Mechanical Engineering Department, University of Texas at Austin, Austin, TX 78712

J. Turbomach 124(3), 445-452 (Jul 10, 2002) (8 pages) doi:10.1115/1.1459733 History: Received October 28, 2000; Online July 10, 2002
Copyright © 2002 by ASME
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References

Ardey, S., and Fottner, L., 1997, “Flow Field Measurements on a Large Scale Turbine Cascade with Leading Edge Film Cooling by Two Rows of Holes,” ASME Paper No. 97-GT-524.
Ardey, S., and Fottner, L., 1998, “A Systematic Experimental Study of the Aerodynamics of Leading Edge Film Cooling on a Large Scale High Pressure Turbine Cascade,” ASME Paper No. 98-GT-434.
Ardey, S., Wolff, S., and Fottner, L., 2000, “Turbulence Structures if Leading Edge Film Cooling Jets,” ASME Paper No. 2000-GT-255.
Abuaf,  N., Bunker,  R., and Lee,  C. P., 1997, “Heat Transfer and Film Cooling Effectiveness in a Linear Airfoil Cascade,” ASME J. Turbomach., 119, pp. 302–309.
Ames,  F. E., 1998, “Aspects of Vane Film Cooling with High Turbulence: Part II—Adiabatic Effectiveness,” ASME J. Turbomach., 120, pp. 777–784.
Bohn, D. E., Becker, V. J., and Rungen, A. U., 1997, “Experimental and Numerical Conjugate Flow and Heat Guide Vane,” ASME Paper No. 97-GT-15.
Polanka, M. D., Witteveld, V. C., and Bogard, D. G., 1999, “Film Cooling Effectiveness in the Showerhead Region of a Gas Turbine Vane Part I: Stagnation Region and Near-Pressure Side,” ASME Paper No. 99-GT-48.
Witteveld, V. C., Polanka, M. D., and Bogard, D. G., 1999, “Film Cooling Effectiveness in the Showerhead Region of a Gas Turbine Vane Part II: Stagnation Region and Near-Suction Side,” ASME Paper No. 99-GT-49.
Cutbirth, J. M., and Bogard, D. G., 2001, “Thermal Field and Flow Visualization within the Stagnation Region of a Film Cooled Turbine Vane,” ASME Paper No. 2001-GT-401.
Polanka, M. D., 1999, “Detailed Film Cooling Effectiveness and Three Component Velocity Field Measurements on a First Stage Turbine Vane Subject to High Freestream Turbulence,” Ph.D. dissertation, The University of Texas at Austin, Austin, TX.
Ethridge, M. I., Cutbirth, J. M., and Bogard, D. G., 2000, “Effects of Showerhead Cooling on Turbine Vane Suction Side Film Cooling Effectiveness,” ASME IMECE Conference, Orlando. FL.
Hinze, J. O., 1975, Turbulence, McGraw-Hill, New York, NY.
Pietrzyk,  J. R., Bogard,  D. G., and Crawford,  M. E., 1989, “Hydrodynamic Measurements of Jets in Crossflow for Gas Turbine Film Cooling Applications,” ASME J. Turbomach., 111, pp. 139–145.

Figures

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Test section of turbine vane facility
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Schematic of vane internal geometry
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Schematic showing positions of data planes relative to hole locations
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Mean velocity field, no coolant injection, Tu=0.5%
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Mean velocity field, M=2.0,Tu=0.5%
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Rms turbulence fields for Tu=0.5%—(a) u/U, (b) v/U, (c) w/U
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Mean velocity field, no coolant injection, Tu=20%
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Mean velocity field, M=20, Tu=20%
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Rms turbulence fields for Tu=20%—(a) u/U, (b) v/U, (c) w/U
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Variations of mean velocity field with spanwise position; coolant injection with M=2.0 and mainstream Tu=20% —(a) z/D=51.7, (b) z/D=50.0, (c) z/D=48.9, (d) z/D=47.3
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Variations of w/U turbulence levels with spanwise position; with M=2.0 and mainstream Tu=20%— (a) z/D=51.7, (b) z/D=50.0, (c) z/D=48.9, (d) z/D=47.3

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