Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2022 - October 09, 2022
We have developed a thermofluid scanner that enables us to visualize the spatial distributions of velocity and temperature of fluid flows. This novel measuring device can scan the flow field to be measured with a rod-shaped probe equipped with hot- and cold-wires to measure velocity and temperature fields simultaneously. By combining the time-series data from the velocity and temperature sensors and the image measurement data of the probe trajectories obtained by a high-speed camera, the spatial velocity and temperature distributions can be visualized by making the best use of digital signal processing. In this study, we have verified the measurement accuracy by applying the thermofluid scanner to the measurement of a circular jet of heated air. By using a mutual compensation scheme newly developed for the constant-temperature hot-wire anemometer and the response delay of the cold-wire (resistance) thermometer, it was shown that quantitative visualization measurement can be easily realized even in a non-isothermal field with turbulent fluctuations.
