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RESEARCH PAPER

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

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

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

J. Heat Transfer 126(4), 546-553 (May 04, 2004) (8 pages) doi:10.1115/1.1777580 History: Received June 02, 2003; Revised May 04, 2004
Copyright © 2004 by ASME
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References

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Figures

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Illustration of the low-speed cascade
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(a) Heat transfer blade; and (b) pressure blade and shroud taps.
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Different squealer tip geometries studied
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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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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 all 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 configurations
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Comparison of camberline heat transfer for each squealer tip with the plain tip: (a) suction side squealer; (b) pressure side squealer; (c) camberline squealer; and (d) full squealer.
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Detailed heat transfer distributions under various flow conditions for different squealer geometries: (a) pressure side squealer; and (b) camberline squealer.

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