Measurement of Temperatures on In-Flight Water Droplets by Laser Induced Fluorescence Thermometry  

Oleh:

Salazar, V. M. ; Gonzalez, J. E. ; Rivera, L.A.

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 126 no. 2 (Apr. 2004), page 279-285.
Topik: temperature; measurement; temperatures; in - flight water; droplets; laser induced; fluoresecence; thermometry

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.8 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

This work presents the use of laser induced fluorescence for instantaneous temperature measurements of 200 µm water droplets in a monodisperse stream while traveling downward in a standard stagnant atmosphere. The droplets are doped with small concentrations of a natural fluorescence dye (Pyrene), and with a surfactant substance, cetyldimetylbenzylammoniumchloride (CDBAC) to improve the fluorescence emission and the rate of its two band emission (excimer to monomer) is used to determine the temperature. The temperature distribution along the stream of droplets was determined for three different initial temperatures : 30° C, 40° C, and 50° C at the exit of the nozzle and it is compared very favorably with numerical results.

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