Effects of Periodic Inflow Unsteadiness on the Time-Averaged Velocity Field and Pressure Recovery of a Diffusing Bend With Strong Curvature

[+] Author and Article Information
M. I. Yaras, P. Orsi

Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, Canada K1S 5B6

J. Fluids Eng 126(2), 229-237 (May 03, 2004) (9 pages) doi:10.1115/1.1667887 History: Received October 30, 2002; Revised October 02, 2003; Online May 03, 2004
Copyright © 2004 by ASME
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Fishtail-shaped diffuser test section
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Geometry of the diffuser flow path
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Unsteady-flow generator
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Ensemble-averaged velocity distribution in Plane A (0 to 89% of period) (uncertainties: ±2% for the velocity magnitude and ±1.5 deg for the flow direction)
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Time-averaged velocity distributions along the a) y axis (z=0),b) z axis (y=0) in Plane A. (Uncertainty in V/VCLA=±2%.)
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Time-averaged velocity distribution. (Uncertainties: ±2% for the velocity magnitude and ±1.5 deg for the flow direction.)
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Time-averaged streamwise vorticity distribution. (Uncertainty in streamwise vorticity=±0.05.)
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Time-averaged axial velocity distribution along the y axis (z=0) in Plane B. (Uncertainty in V/VCLA=±2%.)
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Streamwise variations of flow distortion. (Uncertainty in α and αp=±0.05.)




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