Internal Temperature Measurement in a Sub-millimeter Scale Channel Flow using Temperature-sensitive Resin

Heat transfer in microchannels has garnered significant attention due to its relevance in diverse fluid science applications, including electronic components and biochips. However, understanding heat transfer processes at the microscale remains challenging because of limitations in experimental data collection. While Computational Fluid Dynamics (CFD) simulations offer a valuable tool for analyzing these phenomena, their accuracy depends heavily on validation through experimental data.

To address this challenge, a novel luminescent sensor and channel model manufacturing technique have been developed. This presentation outlines the current status of this research, highlighting the use of advanced 3D printing methods to fabricate luminescent sensors. These sensors are embedded into the channel walls at designated locations to visualize temperature evolution under sidewall heating conditions. Additionally, the scale of the experimental setup was expanded to the millimeter level to assess and enhance the capability of the measurement technique. This research is an international collaboration between the University of Notre Dame, USA, and National Tsing Hua University, Taiwan.Internal Temperature Measurement in a Milli-channel Flow using Temperature-sensitive Resin