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TECHNICAL PAPERS

Separation Bubbles Under Steady and Periodic-Unsteady Main Flow Conditions

[+] Author and Article Information
Weiliang Lou, Jean Hourmouziadis

Jet Propulsion Laboratory, Aerospace Institute F1, Berlin University of Technology, Marchstr. 12, D-10587 Berlin, Germany

J. Turbomach 122(4), 634-643 (Feb 01, 2000) (10 pages) doi:10.1115/1.1308568 History: Received February 01, 2000
Copyright © 2000 by ASME
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References

Figures

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Velocity power spectra along the inflection point line in the time-averaged velocity profiles
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Normalized ensemble-averaged mean velocity field
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Normalized ensemble-averaged rms velocity field
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Reynolds number effects on performance of a turbine cascade 2
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Rotor/stator interaction of a turbine stage
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Periodic-unsteady low-speed wind tunnel
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Velocity distribution over the flat plate
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Velocity field around the separation bubble
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Velocity power spectra along the line of inflection points in the velocity profiles
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Boundary layer thicknesses and shape factor
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Separation bubble size of the four test cases
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Reynolds number based on the length from separation to transition as a function of the momentum thickness Reynolds number at separation point
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Incoming flow signal of the periodic-unsteady boundary layer
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Time-averaged velocity profiles and typical velocity signals of the periodic-unsteady boundary layer
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Oscillation characteristic of the separation bubble
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Time-space diagram of the separation, transition, and reattachment (Re=54,500,Sr=0.89,A=13 percent)

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