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TECHNICAL PAPERS

Effect of Blade Tip Geometry on Tip Flow and Heat Transfer for a Blade in a Low-Speed Cascade

[+] Author and Article Information
Vikrant Saxena, Hasan Nasir, Srinath V. Ekkad

Mechanical Engineering Department, Louisiana State University, Baton Rouge, LA 70803

J. Turbomach 126(1), 130-138 (Mar 26, 2004) (9 pages) doi:10.1115/1.1643385 History: Received December 01, 2002; Revised March 01, 2003; Online March 26, 2004
Copyright © 2004 by ASME
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References

Figures

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Illustration of the low-speed cascade
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(a) Heat transfer blade, (b) pressure blade and shroud taps
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Blade tip configurations tested
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Hue versus temperature curve for liquid crystal sheet
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Velocity signature for the four flow conditions
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Surface pressure distributions on the test blade at different span locations
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Comparison of surface pressure distributions for two different span locations
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Static pressure distributions {(Pt−Ps)/Pt} on the shroud for the plain tip under different flow conditions
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Static pressure distributions {(Pt−Ps)/Pt} on the shroud for the different tip configurations
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Detailed heat transfer coefficient distributions on plain tips
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Detailed heat transfer coefficient distributions for different tip sealing geometries
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Camberline heat transfer coefficient distributions: top (a) to bottom (e)
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Effect of upstream flow condition on tip camberline heat transfer coefficient

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