Volumetric Temperature Measurement Technique by Scanning Liquid Crystal Thermometry and Its Applications

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  • 219 感温液晶を用いた温度場の三次元計測と応用
  • カンオン エキショウ オ モチイタ オンドバ ノ 3ジゲン ケイソク ト オウ

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A new calibration technique of liquid crystal thermometry has been introduced to the quantitative temperature measurements in a thermal flow and is applied to volumetric temperature measurements in a thermal convection experiment to investigate the three-dimensional thermal structure. It is proved that the present calibration technique improves the accuracy of temperature measurements as a factor of 2 in comparison with a clasical calibration technique with hue. The volumetric temperature measurement is carried out by scanning a light sheet and capturing a number of two-dimensional visualized thermal images. The results demonstrate a three-dimensional and cross-sectional view of the thermal plume developing into a cold fluid by buoyancy force, indicating the usefulness of this technique.

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