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TECHNICAL PAPERS

Influence of Clocking and Vane/Blade Spacing on the Unsteady Surface Pressure Loading for a Modern Stage and One-Half Transonic Turbine

[+] Author and Article Information
C. W. Haldeman, M. L. Krumanaker, M. G. Dunn

Gas Turbine Laboratory, The Ohio State University, Columbus, OH 43235

J. Turbomach 125(4), 743-753 (Dec 01, 2003) (11 pages) doi:10.1115/1.1625398 History: Received December 01, 2002; Revised March 01, 2003; Online December 01, 2003
Copyright © 2003 by ASME
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References

Figures

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Sketch of turbine stage located in OSU GTL shock tunnel
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Axial flow path of turbine stage
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Time-averaged normalized pressures, clocking position 1, for HPT vane, HPT blade, and LPT vane, various spans
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Time-averaged normalized pressures, clock position 1 inner and outer transition ducts
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Time-averaged normalized pressures for inner transition duct, clock position 1, various circumferential positions
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Time-averaged normalized pressures for outer transition duct, clock position 1, various circumferential positions
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Variation in normalized pressure due to clocking position for HPT blade and LPT vane at 50% span
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Variation in normalized pressure due to clocking position for the inner transition duct at various circumferential positions
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Variation in normalized pressure due to clocking position for the outer transition duct at various circumferential positions
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Normalized pressure fundamental and first harmonic peaks, HPT vane at 10% span
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Normalized pressure fundamental and first harmonic peaks, HPT blade at 10% span
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Normalized pressure fundamental and first harmonic peaks, HPT blade at 50% span
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Normalized pressure fundamental and first harmonic peaks, HPT blade at 90% span
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Normalized pressure fundamental and first harmonic peaks, LPT vane at 10% span
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Normalized pressure fundamental and first harmonic peaks, LPT vane at 50% span
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Normalized pressure fundamental and first harmonic peaks, LPT vane at 90% span
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Variation in normalized pressure fundamental and first harmonic peaks due to clocking position for LPT vane at 10% span
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Variation in normalized pressure fundamental and first harmonic peaks due to clocking position for LPT vane at 50% span
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Variation in normalized pressure fundamental and first harmonic peaks due to clocking position for LPT vane at 90% span
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Influence of reduced spacing on time-averaged normalized pressure as a function of clock position for the HPT vane
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Influence of reduced spacing on time-averaged normalized pressure as a function of clock position for the HPT blade
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Influence of reduced spacing on time-averaged normalized pressure as a function of clock position for the LPT vane
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Variation in normalized pressure fundamental and first harmonic peaks due to reduced HPT vane/blade spacing for HPT vane 10% span
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Variation in normalized pressure fundamental and first harmonic peaks due to reduced HPT vane/blade spacing for HPT blade 10% span
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Variation in normalized pressure fundamental and first harmonic peaks due to reduced HPT vane/blade spacing for HPT blade 50% span
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Variation in normalized pressure fundamental and first harmonic peaks due to reduced HPT vane/blade spacing for HPT blade 90% span
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Variation in normalized pressure fundamental and first harmonic peaks due to reduced HPT vane/blade spacing for LPT vane 10% span
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Variation in normalized pressure fundamental and first harmonic peaks due to reduced HPT vane/blade spacing for LPT vane 50% span
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Variation in normalized pressure fundamental and first harmonic peaks due to reduced HPT vane/blade spacing for LPT vane 90% span
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Integral effects of clocking on LPV time-averaged pressure data

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