Heat Transfer Coefficients on the Squealer Tip and Near Squealer Tip Regions of a Gas Turbine Blade

Jae Su Kwak; Je-Chin Han

doi:10.1115/1.1571849

Journal of Heat Transfer | Volume 125 | Issue 4 | TECHNICAL PAPERS

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TECHNICAL PAPERS: Combustion and Gas Turbine Heat Transfer

Heat Transfer Coefficients on the Squealer Tip and Near Squealer Tip Regions of a Gas Turbine Blade

Jae Su Kwak, Senior Researcher and Je-Chin Han, M. C. Easterling Endowed Chair

[+] Author and Article Information

Jae Su Kwak

Aeropropulsion Department, Korea Aerospace Research Institutee-mail: jskwak@kari.re.kr

Je-Chin Han

Turbine Heat Transfer Laboratory, Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123e-mail: jchan@mengr.tamu.edu

J. Heat Transfer 125(4), 669-677 (Jul 17, 2003) (9 pages) doi:10.1115/1.1571849 History: Revised February 25, 2003; Online July 17, 2003; Received August 26, 2003

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(a) Definition of blade coordinate and location of pressure taps on the blade; and (b) Pressure distributions on the blade pressure and suction side with C=1.5 percent.

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Pressure distribution on the shroud surface

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(a) The relation between hue and temperature; and (b) initial temperature on the tip for C=1.5 percent.

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Heat transfer coefficient on the blade tip

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Conceptual view of flow near squealer tip: (a) the cavity closer to the trailing edge; and (b) the cavity closer to the leading edge

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Heat transfer coefficient on the shroud

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Heat transfer coefficient on the pressure side

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Heat transfer coefficient on the suction side

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Averaged heat transfer coefficient on the tip

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Averaged heat transfer coefficient on the shroud

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Averaged heat transfer coefficient on the pressure side

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Averaged heat transfer coefficient on the suction side

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Kwak J, Han J. Heat Transfer Coefficients on the Squealer Tip and Near Squealer Tip Regions of a Gas Turbine Blade. ASME. J. Heat Transfer. 2003;125(4):669-677. doi:10.1115/1.1571849.

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Heat Transfer Coefficients on the Squealer Tip and Near Squealer Tip Regions of a Gas Turbine Blade

References

Figures

Schematic of blow-down facility

Definition of blade tip and shroud

Heat transfer measurement blade

Detailed view of the blade tip

(a) Definition of blade coordinate and location of pressure taps on the blade; and (b) Pressure distributions on the blade pressure and suction side with C=1.5 percent.

Pressure distribution on the shroud surface

(a) The relation between hue and temperature; and (b) initial temperature on the tip for C=1.5 percent.

Heat transfer coefficient on the blade tip

Conceptual view of flow near squealer tip: (a) the cavity closer to the trailing edge; and (b) the cavity closer to the leading edge

Heat transfer coefficient on the shroud

Heat transfer coefficient on the pressure side

Heat transfer coefficient on the suction side

Averaged heat transfer coefficient on the tip

Averaged heat transfer coefficient on the shroud

Averaged heat transfer coefficient on the pressure side

Averaged heat transfer coefficient on the suction side

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Errata

Discussions

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