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TECHNICAL PAPERS

The Effects of the Vane and Mainstream Turbulence Level on Hot Streak Attenuation

[+] Author and Article Information
Sean C. Jenkins, David G. Bogard

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

J. Turbomach 127(1), 215-221 (Feb 09, 2005) (7 pages) doi:10.1115/1.1812777 History: Received October 01, 2003; Revised March 01, 2004; Online February 09, 2005
Copyright © 2005 by ASME
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References

Roback,  R. J., and Dring,  R. P., 1993, “Hot Streaks and Phantom Cooling in a Turbine Rotor Passage. 1. Separate Effects,” ASME J. Turbomach., 115, pp. 657–666.
Gundy-Burlet,  K. L., and Dorney,  D. J., 1997, “Three-Dimensional Simulations of Hot Streak Clocking in a 1-1/2 Stage Turbine,” Int. J. Turbo Jet Engines, 14, pp. 123–132.
Gundy-Burlet, K., and Dorney, D., 1997, “Influence of 3D Hot Streaks on Turbine Heat Transfer,” Proceedings of the 1997 International Gas Turbine & Aeroengine Congress & Exposition, June 2–5 1997, Orlando, FL.
Jenkins, S. C., Varadarajan, K., and Bogard, D. G., 2003, “The Effects of High Mainstream Turbulence and Turbine Vane Film Cooling on the Dispersion of a Simulated Hot Streak,” International Gas Turbine and Aeroengine Congress and Exposition, Atlanta, ASME Paper no. GT-2003-38575.
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.
Kuotmos,  P., and McQuirk,  J. J., 1989, “Isothermal Flow in a Gas Turbine Combustor—a Benchmark Experimental Study,” Exp. Fluids, 7, pp. 344–354.
Cutbirth, J. M., 2000, “Turbulence and Three-Dimensional Effects on the Film Cooling of a Turbine Vane,” Ph.D. dissertation, The University of Texas at Austin.
Radomsky, R. W., 2000, “High Freestream Turbulence Studies on a Scaled-Up Stator Vane,” Ph.D. dissertation, University of Wisconsin–Madison.

Figures

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Simulated vane cascade with hot streak generator
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(a) Temperature profiles of the hot streak at Position T with hot streak position at −0.1P and +0.1P,Tu=3.5%. (b) Schematic of entering (stagnation line) and exiting (trailing edge) temperature profiles.
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Comparison of the length of streamlines from Position A to Position T passing along the suction and pressure sides of the vane
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Temperature profiles of the hot streak at Position T with hot streak position varying from −0.1P to +0.1P,Tu=3.5%
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Temperature profiles of the hot streak at Position T with hot streak position varying from −0.5P to +0.5P,Tu=3.5%
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Comparison of the length of streamlines from Position A to Position B passing through the mid-passage on the suction and pressure sides of the vane
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Comparison of hot streak profiles at equivalent streamwise distances shown in Fig. 6
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Tunnel schematic showing positions along an axial plane for hot streak positions of 0.0P and +0.5P
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Comparison of hot streak profiles impacting the vane at 0.0P, and passing through the mid-passage at +0.5P at equal axial positions, Tu=3.5%
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(a) Temperature profiles of the hot streak at Position T with hot streak position varying from 0.0P to +0.5P,Tu=20%. (b) Temperature profiles of the hot streak at Position T with hot streak position varying from −0.5P to 0.0P,Tu=20%
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Temperature profiles of the hot streak at Position T with hot streak position varying from −0.1P to +0.1P,Tu=20%
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Comparison of hot streak profiles impacting the vane at 0.0P, and passing through the mid-passage at +0.5P at equal axial positions, Tu=20%
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Temperature profiles of the hot streak for the hot streak aligned with the stagnation line, Tu=20%
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Stagnation pressure loss profile taken in the wake of the vane at Position B, Tu=3.5%
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Comparison of temperature ratio profiles at Position T (trailing edge) and in the wake at Position B for the hot streak at −0.1P,Tu=20%
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(a) Temperature profiles of the hot streak at Position B with hot streak position varying from 0.0P to +0.5P,Tu=20%. (b) Temperature profiles of the hot streak at Position B with hot streak position varying from −0.5P to 0.0P,Tu=20%
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Comparison of temperature ratio profiles at the trailing edge and in the wake at Position B for the hot streak at +0.022P and −0.5P,Tu=20%

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