Characterization of acoustic streaming and heating using synchronized infrared thermography and particle image velocimetry |
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Authors: | Layman Christopher N Sou In Mei Bartak Rico Ray Chittaranjan Allen John S |
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Affiliation: | Department of Mechanical Engineering, University of Hawai'i at M?noa, Honolulu, HI 96822, USA. |
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Abstract: | Real-time measurements of acoustic streaming velocities and surface temperature fields using synchronized particle image velocimetry and infrared thermography are reported. Measurements were conducted using a 20 kHz Langevin type acoustic horn mounted vertically in a model sonochemical reactor of either degassed water or a glycerin-water mixture. These dissipative phenomena are found to be sensitive to small variations in the medium viscosity, and a correlation between the heat flux and vorticity was determined for unsteady convective heat transfer. |
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