Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : March 16, 2023 - March 17, 2023
The thermochromic liquid crystal (TLC) particle has been used to measure planar or volumetric temperature distribution in water based on its color dependence on temperature. In this study, we simultaneously captured multiple images of a single TLC particle from many different directions, evaluated the temperature from each image, and aimed to reduce the random error by taking the ensemble average of the evaluated temperature. A single 3CCD color camera recorded the multiple images through a mirror array of 90 flat mirrors (10mm x 10mm) arranged in an axisymmetric ellipsoid. The calibration curves defining a relationship between the temperature and hue of particles were evaluated for each mirror. The RMS of the history of measured temperature of a single TLC particle traveling in water with uniform temperature was reduced by a factor of three when the number of mirrors was 71 compared to one.
