Vortex Dynamics of the Stator Wake-Rotor Cascade Interaction

[+] Author and Article Information
Jerzy Swirydczuk

Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-952 Gdansk, Polande-mail: jsk@imp.gda.pl

J. Fluids Eng 124(2), 400-412 (May 28, 2002) (13 pages) doi:10.1115/1.1467597 History: Received June 06, 2001; Revised January 29, 2002; Online May 28, 2002
Copyright © 2002 by ASME
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Rotor cascade mapped into circular cascade of circles
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Distributions of velocity modulus (left) and angle (right) along rotor passage sections located at x/cax=−14.85%, 25.73%, 66.52%, and 101.68% from the rotor blade leading edge
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Wake deformation in the rotor passage: solution by FlowER (top) and potential model (bottom)
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Phase shift, φ, as the measure of wake vortex position along the wake axis
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Stator wake deformation in the rotor passage: Γ*=0.005,φ=0.0
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Isolated vortices separated from the wake: positive (top) and negative vortex (bottom)
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Comparison of the experimental (top) and calculated (bottom) unsteady flow field generated by the stator wake in the rotor passage (reproduced from 19, courtesy ASME)
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Comparison of the temporal development of relative flow values at points near the pressure (left) and suction sides (right) of the rotor blade (reproduced from 19, courtesy ASME)
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Velocity fluctuations generated by passing vortex wake at points near the pressure and suction sides of the rotor blade



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