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TECHNICAL PAPERS

A Comparison of Spreading Angles of Turbulent Wedges in Velocity and Thermal Boundary Layers

[+] Author and Article Information
S. Zhong, T. P. Chong

School of Engineering, University of Manchester, Manchester M13 9PL, UK

H. P. Hodson

Whittle Lab, Department of Engineering, University of Cambridge, Cambridge CB3 0DY, UK

J. Fluids Eng 125(2), 267-274 (Mar 27, 2003) (8 pages) doi:10.1115/1.1539871 History: Received January 15, 2002; Revised September 16, 2002; Online March 27, 2003
Copyright © 2003 by ASME
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References

Klein, E. J., and Margozzi, A. P., 1968, “Exploratory Investigation on the Measurement of Skin Friction by Means of Liquid Crystals,” NASA TM-X-1774.
Reda,  D. C., and Wilder,  M. C., 1997, “Simultaneous, Full-Surface Visualizations of Transition and Separation Using Liquid Crystal Coatings,” AIAA J., 35(4), pp. 615–616.
Reda,  D., Wilder,  M. C., Farina,  D. J., and Zilliac,  G., 1997, “New Methodology for the Measurement of Surface Shear Stress Vector Distributions,” AIAA J., 35(4), pp. 608–614.
Ireland, P. T., Wang, Z., and Jones, T. V., 1993, Liquid Crystal heat Transfer Measurements, Von Karman Institute for Fluid Dynamics 1992–1993 Lecture Series.
Zhong,  S., Kittichaikarn,  C., Hodson,  H. P., and Ireland,  P. T., 2000, “Visualization of Turbulent Spots Under the Influence of Adverse Pressure Gradients,” Exp. Fluids, 28, pp. 385–393.
Blair,  M. F., 1982, “Influence of Free-Stream Turbulence on Boundary Layer Transition in Favorable Pressure Gradients,” ASME Journal of Engineering for Power, 104, pp. 743–750.
Sharma, O. P., 1987, “Momentum and Thermal Boundary Layers on Turbine Airfoil Suction Surfaces,” AIAA Paper No. 87-1918.
Emmons,  H. W., 1951, “The Laminar-Turbulent Transition in a Boundary Layer—Part I,” J. Aerosp. Sci., 18(7), pp. 490–498.
Schubauer, G. B., and Klebanoff, P. S., 1955, “Contribution on the Mechanism of Boundary Layer Transition,” NACA TN-3489.
Clark,  J. P., Magari,  P. J., and Jones,  T. V., 1993, “On the Distribution of Heat Transfer Coefficients in Turbulent and Transitional Wedges,” Int. J. Heat Fluid Flow, 14(2), pp. 217–222.
Mayle, R. E., 1991, “The Role of Laminar-Turbulent Transition in Gas Turbine Engines,” ASME Paper No. 91-GT-261.
Narasimha,  R., and Prasad,  S. N., 1994, “Leading Edge Shape for Flat Plate Boundary Layer Studies,” Exp. Fluids, 17, pp. 358–360.
Hall,  G. R., 1967, “Interaction of the Wake From Bluff Bodies With an Initially Laminar Boundary Layer,” AIAA J., 5, pp. 1386–1392.
Wang, Z., Ireland, P. T., Jones, T. V., and Davenport, R., 1994, “A Color Image Processing System for Transient Liquid Crystal Heat Transfer Experiments,” ASME Paper NO. 94-GT-290.
Sankaran, R., Chamber, A. J., and Antonia, R. A., 1986, “The Influence of a Favorable Pressure Gradient on the Growth of a Turbulent Spot,” Proceedings of the 9th Australian Fluid Mechanics Conference, University of Auckland, New Zealand.
Gostelow,  J. P., Melwani,  N., and Walker,  G. J., 1996, “Effects of Streamwise Pressure Gradient on Turbulent Spot Development,” ASME J. Turbomach., 118, pp. 737–743.
González, R. C., 1993, Digital Image Processing, Addison-Wesley, Reading, MA.
Wygnanski,  I., Zilberman,  M., and Harritonidis,  J., 1982, “On the Spreading of a Turbulent Spot in the Absence of a Pressure Gradient,” J. Fluid Mech., 123, pp. 69–90.
Gad-el-Hak,  M., Blackwelder,  R. F., and Riley,  J. J., 1981, “On the Growth of Turbulent Regions in a Laminar Boundary Layers,” J. Fluid Mech., 110, pp. 73–99.

Figures

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Schematic diagram of the test section
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Schematic diagram of the heated plate used with temperature-sensitive liquid crystals
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Velocity and pressure gradient distributions for the mild (K1) and strong (K2) pressure gradient cases
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Schematic diagrams showing the lighting and recording arrangement in (a) shear-sensitive and (b) temperature-sensitive liquid crystal tests
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Typical hue-temperature calibration curve for temperature-sensitive liquid crystals
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Turbulent wedge shown by shear-sensitive liquid crystals (raw data)
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Turbulent wedge shown by temperature-sensitive liquid crystals (raw data)
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Contours of color intensity obtained from shear-sensitive liquid crystals, (a) K=0, (b) K=0.25×10−6, (c) K=1.0×10−6
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Contours of heat transfer coefficient obtained from temperature-sensitive liquid crystals, (a) K=0, (b) K=0.25×10−6, (c) K=1.0×10−6
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Spanwise distributions of (a) heat transfer rate from temperature-sensitive liquid crystals and (b) color intensity from shear-sensitive liquid crystals at x=162.5 mm(K=0)
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Linear best-fit of the boundaries of a turbulent wedge (x=162.5 mm,K=0). The symbols represent the edge of the wedge found from the liquid crystal images at a number of streamwise locations.
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Signals from a spanwise array of surface-mounted hot films at x=162.5 mm(K=0)
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Comparison of signals from surface-mounted hot films and a hot-wire at x=162.5 mm(K=0)

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