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TECHNICAL PAPERS

The Effects of High Mainstream Turbulence and Turbine Vane Film Cooling on the Dispersion of a Simulated Hot Streak

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

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

J. Turbomach 126(1), 203-211 (Mar 26, 2004) (9 pages) doi:10.1115/1.1643911 History: Received December 01, 2002; Revised March 01, 2003; Online March 26, 2004
Copyright © 2004 by ASME
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References

Figures

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Normalized temperature ratio (ΘR) plot at Position B with streak impacting the stagnation point, high turbulence (20%); (a) no coolant, (b) showerhead on, M*=2.0,DR=1.6
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Normalized temperature ratio (ΘR) plot at Position B with hot streak impacting the stagnation point, high turbulence (20%); (a) no coolant, (b) suction side on, M=1.4,DR=1.6
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Normalized temperature ratio (ΘR) plot at Position B with hot streak impacting the stagnation point, high turbulence (20%); (a) no coolant, (b) pressure side on, M=1.4,DR=1.6
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Normalized temperature ratio (ΘR) plot at Postion B with hot streak impacting the stagnation point, high trubulence (20%); (a) no coolant, (b) showerhead on M*=1.4, pressure side on, M=1.0, suction side on, M=1.0,DR=1.6
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Simulated vane cascade with hot streak generator
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(a) Showerhead and pressure side cooling holes (b) Schematic of film cooling hole configuration
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Final positions and sizes of resistance rods, horizontal view of hot streak generator section
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Normalized velocity distribution for vertical traverse over the resistance rods and over the hot streak generator measured at Position A, Tu=3.5
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(a) Peak temperature ratio profiles at Position A for Tu=20% and 3.5% (b) Peak normalized temperature ratio (ΘR) profiles at Position A and B for Tu=20% and 3.5% for the hot streak through the mid-passage
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Normalized temperature ratio (ΘR) plot at Position B with hot streak through the mid-passage; (a) high turbulence (20%), (b) low turbulence (3.5%)
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Normalized temperature ratio (ΘR) plot at Position B, high turbulence (20%), with hot streak; (a) impacting the stagnation point, (b) through the mid-passage
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Temperature ratio (T/T) plots around suction side from Position A to 0.33LS to 0.66LS to Position B for high turbulence with hot streak impacting the stagnation point
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Temperature ratio (T/T) plots around pressure side from Position A to 0.33LP to 0.66LP to Position B for high turbulence with hot streak impacting the stagnation point
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Streamlines passing around the vane on the suction and pressure side to a position of s/L=0.33

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