Surface Flow Visualization Using Thermal Tufts Produced by Evaporatively Cooled Spots

[+] Author and Article Information
Jason S. Smith, James W. Baughn

Department of Mechanical and Aeronautical Engineering, University of California, Davis, CA 95616 USA

Aaron R. Byerley

Department of Aeronautics, United States Air Force Academy, CO 80840 USA

J. Fluids Eng 127(1), 186-188 (Mar 22, 2005) (3 pages) doi:10.1115/1.1852493 History: Received March 11, 2004; Revised August 12, 2004; Online March 22, 2005

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Baughn, J. W., Butler, R. J., Byerley, A. R., and River, R. B., 1995, “An Experimental Investigation of Heat Transfer, Transition and Separation on Turbine Blades at Low Reynolds Number and High Turbulence Intensity,” ASME Paper no. 95-WA/HT-25.
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Batchelder,  K. A., and Moffat,  R. J., 1998, “Surface Flow Visualization Using the Thermal Wakes of Small Heated Spots,” Exp. Fluids, 25, pp. 104–107.
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Laser thermal tuft (IR) on a turbine blade 4.
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Heat transfer involved in thermal tufts.
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Velocity and thermal boundary layer development.
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Embedded ECTT cavity design.
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IR image of ECTTs at freestream velocity of 5 m/s.
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Enhanced IR image of the thermal tufts shown in Fig. 5




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