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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Rotordynamic Force Prediction of Whirling Centrifugal Impeller Shroud Passages Using Computational Fluid Dynamic Techniques

[+] Author and Article Information
J. J. Moore, A. B. Palazzolo

Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123

J. Eng. Gas Turbines Power 123(4), 910-918 (Mar 01, 1999) (9 pages) doi:10.1115/1.1385829 History: Received October 01, 1998; Revised March 01, 1999
Copyright © 2001 by ASME
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References

Figures

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360-deg seven-bladed impeller model
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Computed velocity vectors at impeller tip (F1 grid)
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Velocity vectors at shroud elbow (F1 grid)
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Velocity vectors at seal entrance (F1 grid)
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Absolute tangential velocity contours (F1 grid)
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Shroud inlet pressure distribution
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Schematic of whirling rotor
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Meridonial plane of combined primary/secondary model
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Interface with impeller exit showing eccentric shroud
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Effect of grid density of impedance curves
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Comparison of impedance curves
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Axial velocity profiles, grooved liquid annular seal
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Circumferential velocity profiles, grooved liquid annular seal

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