A description of infrared (IR) thermography, as it is employed in a hypersonic blowdown wind tunnel for the acquisition of high quality two-dimensional heat transfer data over aerodynamic surfaces, is given. It is shown that the availability of an IR scanning radiometer and a standard digital image processing (DIP) system in the laboratory provides the means for highly efficient (in terms of time and cost) heat transfer measurement, with accuracy levels comparable to those achieved by classical discrete point gauges, such as thin-film surface resistance thermometers and thermocouples. The advantages of IR thermal mapping over the classical techniques, not only in measuring heat transfer distributions over complex three-dimensional configurations and in locating and quantifying highly localized hot spots, but also in interpreting puzzling results observed on simple configurations, are illustrated using a series of examples. A discussion of the limitations of the technique indicates that most of such limitations are common to classical 'zero-dimensional' instrumentation as well.<>


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Quantitative heat transfer measurements in hypersonic wind tunnels by means of infrared thermography


    Contributors:


    Publication date :

    1993-07-01


    Size :

    1219491 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Aerodynamic heat transfer testing in hypersonic wind tunnels using an infrared imaging system

    COLLIER, ARNOLD / LAFFERTY, JOHN / SWINFORD, SCOTT et al. | AIAA | 1990


    Hypersonic Wind Tunnels

    Chanetz, Bruno / Délery, Jean / Gilliéron, Patrick et al. | Springer Verlag | 2020



    EXPERIMENTS ON HYPERSONIC ROUGHNESS INDUCED TRANSITION BY MEANS OF INFRARED THERMOGRAPHY

    Schrijer, F. F. J. / Scarano, F. / van Oudheusden, B. W. et al. | British Library Conference Proceedings | 2004