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TECHNICAL PAPERS

Experimental and Theoretical Comparison of Two Swirl Brake Designs

[+] Author and Article Information
K. K. Nielsen, C. M. Myllerup

Machinery Dynamics Group, O̸degaard & Danneskiold-Samso̸e A/S, Copenhagen, Denmark

D. W. Childs

Turbomachinery Laboratory, Mechanical Engineering Department, Texas A&M University, College Station, TX 77843

J. Turbomach 123(2), 353-358 (Feb 01, 2000) (6 pages) doi:10.1115/1.1354140 History: Received February 01, 2000
Copyright © 2001 by ASME
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References

Figures

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Both swirl brake designs investigated
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Cross-coupled stiffness variation with inlet swirl ratio for rotor speed of 5000 rpm
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Cross-coupled stiffness variation with inlet swirl ratio for rotor speed of 12000 rpm
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Cross-coupled stiffness variation with inlet swirl ratio for rotor speed of 16000 rpm
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Computational domain with grid surfaces
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Dependence of seal inlet swirl ratio on the number of grid nodes
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Seal inlet swirl ratio variation with swirl brake inlet swirl ratio for rotor speed of 5000 rpm
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Seal inlet swirl ratio variation with swirl brake inlet swirl ratio for rotor speed of 12000 rpm
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Seal inlet swirl ratio variation with swirl brake inlet swirl ratio for rotor speed of 16000 rpm
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Vector field for aerodynamic swirl brake design at 42 percent span from stator. Projected streak line originating from vane leading edge included. Seal inlet at left side of plot.
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Vector field for nonaerodynamic swirl brake design at 42 percent span from stator. Projected streak line originating from vane leading edge included. Seal inlet at left side of plot.
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Rotor to stator vector field for the aerodynamic swirl brake at a pitch of 19 percent from the vane suction side towards the pressure side

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