Ratiometric Laser Induced Fluorescence (LIF) Thermometry is applied for temperature measurements in a ‘T’ junction, using microscale visualization methods. Rhodamine B (RhB) and Rhodamine 110 (Rh110) are used as the temperature-dependent and temperature-independent dye, respectively. The temperature responses of the two dyes were carefully measured for different concentrations. A novel normalization procedure for the calibration curve is proposed to render the technique system-independent. The mixing plane between a hot and a cold fluid stream for three different temperatures and three different flow rate ratios is visualized using 4X and 10X magnifications.
Microscale Laser-Induced Fluorescence Method for Non-Intrusive Temperature Measurement
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Chamarthy, P, Wereley, ST, & Garimella, SV. "Microscale Laser-Induced Fluorescence Method for Non-Intrusive Temperature Measurement." Proceedings of the ASME 2007 International Mechanical Engineering Congress and Exposition. Volume 11: Micro and Nano Systems, Parts A and B. Seattle, Washington, USA. November 11–15, 2007. pp. 827-834. ASME. https://doi.org/10.1115/IMECE2007-41935
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