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TECHNICAL PAPERS

Heat Transfer and Flow on the Blade Tip of a Gas Turbine Equipped With a Mean-Camberline Strip

[+] Author and Article Information
A. A. Ameri

AYT Corp., Brook Park, OH 44135-3109e-mail: ameri@grc.nasa.gov

J. Turbomach 123(4), 704-708 (Feb 01, 2001) (5 pages) doi:10.1115/1.1400114 History: Received February 01, 2001
Copyright © 2001 by ASME
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References

Mayle, R. E., and Metzger, D. E., 1982, “Heat Transfer at the Tip of an Unshrouded Turbine Blade,” Proc. Seventh Int. Heat Transfer Conf., Hemisphere Pub., pp. 87–92.
Ameri,  Ali A., and Bunker,  R. S., 2000, “Heat Transfer and Flow on the First-Stage Blade Tip of a Power Generation Gas Turbine: Part 2—Simulation Results,” ASME J. Turbomach., 122, pp. 272–277.
Bunker,  R. S., Bailey,  J. C., and Ameri,  Ali A., 2000, “Heat Transfer and Flow on the First-Stage Blade Tip of a Power Generation Gas Turbine: Part 1—Experimental Results,” ASME J. Turbomach., 122, pp. 263–271.
Bunker, R. S., and Bailey, J. C., 2000, “An Experimental Study of Heat Transfer and Flow on a Gas Turbine Blade Tip With Various Tip Leakage Sealing Methods,” Proc. of 4th ISHMT/ASME Heat and Mass Transfer Conf., Jan., India.
Ameri,  A. A., Steinthorsson,  E., and Rigby,  David L., 1998, “Effect of Squealer Tip on Rotor Heat Transfer and Efficiency,” ASME J. Turbomach., 120, pp. 753–759.
Steinthorsson, E., Liou, M. S., and Povinelli, L. A., 1993, “Development of an Explicit Multiblock/Multigrid Flow Solver for Viscous Flows in Complex Geometries,” Paper No. AIAA-93-2380.
Arnone, A., Liou, M. S., and Povinelli, L. A., 1991, “Multigrid Calculation of Three Dimensional Viscous Cascade Flows,” AIAA Paper No. 91-3238.
Rigby, David L., Ameri A. A., and Steinthorrson E., 1996, “Internal Passage Heat Transfer Prediction Using Multiblock Grids and k–ω Turbulence Model,” ASME Paper No. 96-GT-188.
Rigby, D. L., Ameri A. A., and Steinthorrson E., 1997, “Numerical Prediction of Heat Transfer in a Channel With Ribs and Bleed,” ASME Paper No. 97-GT-431.
Wilcox, D. C., 1994, Turbulence Modeling for CFD, DCW Industries, Inc., La Canada, CA.
Wilcox,  D. C., 1994, “Simulation of Transition With a Two-Equation Turbulence Model,” AIAA J., 32, No. 2, pp. 247–255.
Menter, F. R., 1993, “Zonal Two-Equation k–ω Turbulence Models for Aerodynamic Flows,” Paper No. AIAA-93-2906.
Schlichting, H., 1979, Boundary Layer Theory, McGraw-Hill, New York, Seventh Ed., pp. 312–313.
Ameri,  A. A., Steinthorsson,  E., and Rigby,  D. L., 1999, “Effects of Tip Clearance and Casing Recess on Heat Transfer and Stage Efficiency in Axial Turbines,” ASME J. Turbomach., 121, pp. 683–693.

Figures

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Airfoil and shroud definition
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Blade tip/passage and grid construction
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Streamline patterns of the flow in the tip region for: (a) radius edged tip, (b) radius edged tip and mean camber line strip
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Pressure distribution (P static/P0) over the blade tip surface
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Velocity vectors colored by the velocity magnitude |V|
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Simple radiused edge blade tip. Heat transfer coefficient for 2.03 mm clearance and Tu=5 percent (W/m2 /K): (a) measured 3 and (b) calculated.
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Radiused edge blade tip with mean-camberline strip. Heat transfer coefficient for 2.03 mm clearance and Tu=5 percent (W/m2 /K): (a) measured 4 and (b) calculated.

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