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TECHNICAL PAPERS

Some Aspects of Wake-Wake Interactions Regarding Turbine Stator Clocking

[+] Author and Article Information
Maik Tiedemann, Friedrich Kost

Institute of Propulsion Technology, German Aerospace Center (DLR), Göttingen, Germany

J. Turbomach 123(3), 526-533 (Feb 01, 2000) (8 pages) doi:10.1115/1.1370158 History: Received February 01, 2000
Copyright © 2001 by ASME
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References

Figures

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Fast response total pressure probe with pneumatic reference
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Time-averaged Mach number and total pressure data for NGV/rotor gap of 0.5 cax,NGV, where cm=3 percent. The circles mark NGV positions of time-resolved plots in Fig. 13.
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Time-averaged turbulence and total pressure fluctuations for a NGV/rotor gap of 0.5 cax,NGV, where cm=3 percent. The circles mark NGV positions of time-resolved plots in Fig. 14.
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Time-averaged absolute flow angle data for a NGV/rotor gap of 0.5cax,NGV, where cm=3 percent. The circles mark NGV positions of time-resolved plots in Fig. 15.
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Time-averaged Mach number and total pressure data for a NGV/rotor gap of 0.38 cax,NGV, where cm=3 percent
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Time-averaged turbulence and total pressure fluctuation data for a NGV/rotor gap of 0.38 cax,NGV, where cm=3 percent
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Time-averaged absolute flow angle data for a NGV/rotor gap of 0.38cax,NGV, where cm=3 percent
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Comparison of time-averaged total pressure data for 0 percent and 3 percent NGV coolant ejection, the NGV/rotor gap is 0.5 cax,NGV
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Comparison of time-averaged total pressure fluctuation data for 0 percent and 3 percent NGV coolant ejection, the NGV/rotor gap is 0.5 cax,NGV
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Ensemble-averaged Mach number and total pressure traces for five different NGV clocking positions; Cm=3 percent, and the axial gap is 0.5Cax,NGV
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Turbulence and total pressure fluctuation (normalized by the time-averaged total pressure) traces for five different NGV clocking positions; Cm=3 percent, and the axial gap is 0.5Cax,NGV
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Absolute flow angle traces for five different NGV clocking positions; Cm=3 percent, and the axial gap is 0.5Cax,NGV
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Comparison of total pressure and RMS values; Cm=3 percent, the axial gap is 0.5Cax,NGV and the NGV pitch is 1.104
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Sketch of the “windtunnel for rotating cascades” (RGG)
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Stage configuration at midspan and measurement position. “Trigger” marks the rotor position at which the data acquisition was started, i.e., “rotor pitch 0.”
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The L2F measurement volume (s=207 μm)

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