Particle Image Thermometry and Velocimetry in Vortex Ring with Thermal Difference

• Main Authors: I-Jen Hwang, 黃一仁
• Other Authors: 朱錦洲
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/48345038581256420477

碩士 === 國立臺灣大學 === 應用力學研究所 === 94 === Abstract A technique called particle image thermometry (PIT) is developed that enable to visualize 2-D temperature field using suspending thermochomic liquid crystal traces (TLCs) in water. TLCs reflect different colors with different temperature. PIT can not only visualize qualitative temperature filed but also quantify the temperature value with digital image process. Combing with particle image velocimetry (PIV), this technique can simulate measure temperature and velocity field. In this paper, the technique theory, experimental set-up, calibration and procedure has been described. The study shows the applicability of PIT/V in vortex ring with thermal difference. It demonstrates that PIT/V is a helpful tool for analyzing vortex ring structure with heat transfer.