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TECHNICAL PAPERS

The Transient Liquid Crystal Technique: Influence of Surface Curvature and Finite Wall Thickness

[+] Author and Article Information
G. Wagner, M. Kotulla, P. Ott

Laboratoire de Thermique Appliquée et de Turbomachine (LTT), Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland

B. Weigand, J. von Wolfersdorf

Institute of Aerospace Thermodynamics (ITLR), University of Stuttgart, D-70569 Stuttgart, Germany

J. Turbomach 127(1), 175-182 (Feb 09, 2005) (8 pages) doi:10.1115/1.1811089 History: Received December 01, 2003; Revised March 01, 2004; Online February 09, 2005
Copyright © 2005 by ASME
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References

Clifford, R. J., Jones, T. V., and Dunne, S. T., 1983, “Techniques for Obtaining Detailed Heat Transfer Coefficient Measurements Within Gas Turbine Blade and Vane Cooling Passages,” ASME Paper No. 83-GT-58.
Guo, S. M., Spencer, M. C., Lock, G. D., Jones, T. V., and Harvey, N. W., 1995, “The Application of Thin Film Gauges on Flexible Plastic Substrates to the Gas Turbine Situation,” ASME Paper No. 95-GT-357.
Drost, U., and Bölcs, A., 1998, “Investigation of Detailed Film Cooling Effectiveness and Heat Transfer Distributions on a Gas Turbine Airfoil,” ASME Paper No. 98-GT-20.
Ireland, P. T., and Jones, T. V., 1985, “The Measurements of Local Heat Transfer Coefficients in Blade Cooling Geometries,” Heat Transfer and Cooling in Gas Turbines, Propulsion and Energetics Panel 65th Symposium, CP 390 Paper No. 28, Bergen.
Schultz, D. L., and Jones, T. V., 1973, “Heat Transfer Measurements in Short Duration Hypersonic Facilities,” NATO Advisory Group Aeronautical RD AGARDOGRAPH 165.
Vogel, G., and Weigand, B., 2001, “A New Evaluation Method for Transient Liquid Crystal Experiments,” National Heat Transfer Conf., NHTC2001-20250, California.
Buttsworth,  D. R., and Jones,  T. V., 1997, “Radial Conduction Effects in Transient Heat Transfer Experiments,” Aeronaut. J., 101, pp. 209–212.
Dullenkopf, K., and Mayle, R. E., 1994, “An Account of Free-Stream-Turbulence Length Scale on Laminar Heat Transfer,” ASME Paper No. 94-GT-174.
Van Fossen,  G. J., Simoneau,  R. J., and Ching,  C. Y., 1995, “Influence of Turbulence Parameters, Reynolds Number, and Body Shape on Stagnation Region Heat Transfer,” ASME J. Heat Transfer, 117, pp. 598–603.
Oo,  A. N., and Ching,  C. Y., 2001, “Effect of Turbulence With Different Vortical Structures on Stagnation Region Heat Transfer,” ASME J. Heat Transfer, 123, pp. 665–674.
Reiss, H., 2000, “Experimental Study on Film Cooling of Gas Turbine Airfoils Using Shaped Holes,” Ph.D. thesis No. 2209, EPFL, Switzerland.
Wang, Z., Ireland, P. T., Kohler, S. T., and Chew, J. W., 1996, “Heat Transfer Measurements to a Gas Turbine Cooling Passage With Inclined Ribs,” ASME Paper No. 96-GT-542.
Ireland,  P. T., and Jones,  T. V., 2000, “Liquid Crystal Measurements of Heat Transfer and Surface Shear Stress,” Meas. Sci. Technol., 11, pp. 969–985.
Carslaw, H. S., and Jaeger, J. C., 1992, Conduction of Heat in Solids, Second Edition Oxford Science, Clarendon, Oxford, UK.
Ireland, P. T., 1987, “Heat Transfer in Gasturbines,” Ph.D. thesis, Oxford University, Oxford, UK.
Ekkad,  S. V., Han,  J. C., and Du,  H., 1998, “Detailed Film Cooling Measurements on a Cylindrical Leading Edge Model: Effect of Free-Stream Turbulence and Coolant Density,” ASME J. Turbomach., 120, pp. 799–807.
Butler, R. J., and Baughn, J. W., 1994, “Validation of an In Situ Heated Transient Technique With Local Heat Transfer Measurements on a Cylinder in Crossflow,” 6th AIAA/ASME Thermophysics and Heat Transfer Conference, AIAA Paper No. 94-2009.
Baughn,  J. W., Ireland,  P. T., Jones,  T. V., and Saniei,  N., 1989, “A Comparison of the Transient and Heated-Coating Methods for Measurement of Local Heat Transfer Coefficients on Pin Fin,” ASME J. Heat Transfer, 111, pp. 877–881.
Ekkad,  S. V., and Han,  J. C., 2000, “A Transient Liquid Crystal Thermography Technique for Gas Turbine Heat Transfer Measurements,” Meas. Sci. Technol., 11, pp. 957–968.
Falcoz, C., 2003, “A Comparative Study of Showerhead Cooling Performance,” Ph.D. thesis No. 2735, EPFL, Switzerland.

Figures

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Preconditioning of the cylinder model and rapid insertion mechanism
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Configuration of hollow cylinder model
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Geometry under consideration
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Effect of surface curvature using comparison between Eqs. (1) and (21)
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Deviation of the approximate solution Eq. (21) from the exact solution Eq. (20)
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Regions of validity for approximate (Eq. (21)) and flat plate (Eq. (1)) solutions depending on allowable error
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Effect of finite wall thickness for flat plate
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Effect of finite wall thickness for convex cylinder wall for Big,d=5
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Effect of backside convection for Big,d=5
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Effect of backside temperature condition for Big,d=5
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Heat transfer coefficient obtained using the flat plate semi-infinite model (Eq. (1))
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Heat transfer coefficient obtained using the approximate model (Eq. (21))
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Heat transfer coefficient obtained using the exact solution (Eq. (20))

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