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ISSN Печать: 1065-3090
ISSN Онлайн: 1940-4336
Indexed in
MULTIPOINT CALIBRATION TECHNIQUE OF LIQUID CRYSTAL THERMOMETRY AND ITS APPLICATION TO THREE- DIMENSIONAL TEMPERATURE MEASUREMENT OF THERMAL CONVECTION
Краткое описание
The temperature calibration technique of liquid crystal thermometry has been studied by various calibration methods in HSI color space and with the multipoint calibration technique to consider the viewing angle effect of the liquid crystals. The calibration errors for various calibration methods are evaluated on the basis of uniform temperature images obtained from the present experiment. It is found that the calibration errors are significantly reduced when the full-color HSI calibration is combined with multipoint calibration using the B-spline fitting technique. These calibration methods are applied to the measurement of a three-dimensional temperature field of thermal convection over a heated surface by scanning a light sheet and a camera and capturing a number of color images at various planar cross sections. The reconstructed temperature distributions show the generation of thermal structures over a heated surface, which indicates the usefulness of the present experimental methods.
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Fujisawa N, Nakajima T, Katoh N, Hashizume Y, An uncertainty analysis of temperature and velocity measured by stereo liquid-crystal thermometry and velocimetry, Measurement Science and Technology, 15, 5, 2004. Crossref
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Funatani S, Fujisawa N, Simultaneous measurement of temperature and three velocity components in planar cross section by liquid-crystal thermometry combined with stereoscopic particle image velocimetry, Measurement Science and Technology, 13, 8, 2002. Crossref
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Toriyama Koji, Tada Shigeru, Ichimiya Koichi, Funatani Shumpei, Tomita Yosuke, A new method of temperature measurement using thermochromic liquid crystals (extension of measurable range based on spectral intensity in the narrow-band wavelength), International Journal of Heat and Mass Transfer, 92, 2016. Crossref
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Fujisawa N, Hashizume Y, An uncertainty analysis of temperature and velocity measured by a liquid crystal visualization technique, Measurement Science and Technology, 12, 8, 2001. Crossref