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Digital particle image thermometry: The method and implementation

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Abstract

A computerized flow visualization technique capable of automatically quantifying the temperature field in a two-dimensional cross section of a flow field is described. The temperature sensors used are fast-response temperature-sensitive micro-encapsulated liquid crystal particles. Illuminating the flow by a thin sheet of white light, the reflected colors from the liquid-crystal particles were captured through a 3-chip video color camera and stored onto a videotape for subsequent data processing. The temperature field was obtained through an automatic color-temperature calibration scheme in HSI rather than RGB space, thus allowing for data processing of approximately one-third the time of RGB processing. The technique is finally applied to the study of a heated vortex-ring and some preliminary results are discussed.

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Authors and Affiliations

  1. Department of Applied Mechanics and Engineering Sciences, R-011, University of California, 92093, San Diego, La Jolla, CA, USA

    D. Dabiri & M. Gharib

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  1. D. Dabiri
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  2. M. Gharib
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Dabiri, D., Gharib, M. Digital particle image thermometry: The method and implementation. Experiments in Fluids 11, 77–86 (1991). https://doi.org/10.1007/BF00190283

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  • DOI: https://doi.org/10.1007/BF00190283

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