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Published 1990 | public
Book Section - Chapter

Digital Particle Image Thermometry

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 flow 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.

Additional Information

© 1990 Lissabon. This work is sponsored bye the Defense Advanced Research Project Agency-ACMP through the URI program under contract number DARPA/ACMP N00014-18-k-0758 The authors would like to thank Mr. Alex Weigand for his assistance in the heated vortex-ring experiment.

Additional details

Created:
August 19, 2023
Modified:
March 5, 2024