Optical flow and thermal measurements for spray cooling

This paper reports an experimental study of DI water and FC-72 dielectric liquid spray cooling heat transfer through the optical measurements of the droplets’ local velocity as well as the droplets’ temperature distribution during the flight along the downstream prior to impinging on the surface. A...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2015-08, Vol.87, p.248-253
Main Authors: Hsieh, Shou-Shing, Chen, Ghia-Wei, Yeh, Yi-Fan
Format: Article
Language:English
Subjects:
Droplet size
Laser-induced fluorescence
Liquid film thickness
Spray cooling heat transfer
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Summary:This paper reports an experimental study of DI water and FC-72 dielectric liquid spray cooling heat transfer through the optical measurements of the droplets’ local velocity as well as the droplets’ temperature distribution during the flight along the downstream prior to impinging on the surface. A micro-particle image velocimetry (μPIV) is used to measure the local velocity distribution along the path, and two-color laser-induced fluorescence (μLIF) is used to characterize the local droplet temperature distribution. Furthermore, the time evolution of the liquid film growth, as well as the steady-state liquid film, is visualized and the thickness is measured.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2015.04.005