Local heating compensates for conduction of heat from sensors into modules. Two hot-film sensors stacked on wind-tunnel model. Outer sensor detects changes in boundary-layer flow. Inner sensor provides active thermal isolation between outer sensor and model. Thermal boundary condition controlled at response time of detection hot-film sensor, significantly less than response time of internally heated model. Requires less power to maintain outer hot-film sensor at given temperature, enabling system to respond over greater dynamic range before power limits of instrument reached. Stacked sensors bonded to surface of most wind-tunnel models, even to curved surfaces, and removed after completion of experiments.


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    Title :

    Active Thermal Isolation For Hot-Film Anemometers


    Contributors:

    Published in:

    Publication date :

    1993-08-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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