Temperature Measurement of Air Flow Using Fluorescent Mists Combined with Two-Color LIF

Shumpei Funatani, Koji Toriyama, Tetsuaki Takeda

Department of Mechanical Systems Engineering, University of Yamanashi, Kofu, Japan.

DOI: 10.4236/jfcmv.2013.11004                

Abstract

This study proposes a two-color laser-induced fluorescence (LIF) technique for measuring the temperature distribution of an airflow by spraying a mist of a fluorescent dye. The mist is generated by using propylene glycol, the vapor pressure of which is much lower than that of water, as the solvent of the fluorescent dyes. A supersonic moisture chamber is used as the atomizer for seeding the tracer particles to be visualized. The proposed technique is applied to the measurement of the temperature distribution in a thermal vertical buoyant plume. The proposed two-color LIF thermometry is found to be very effective for the study of such a thermal structure, and it is well suited for measuring the temperature field of an airflow.

Keywords

Flow Visualization; Two-Color LIF; Temperature Measurement; Spraying Mist

Conflicts of Interest

The authors declare no conflicts of interest.

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