title: Characterization of acoustic streaming and heating using synchronized infrared thermography and particle image velocimetry.
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.
authors.affiliation: Department of Mechanical Engineering, University of Hawai'i at Mãnoa, Honolulu, HI 96822, USA.
authors.forename: Christopher N
authors.initials: CN
authors.lastname: Layman
authors.forename: In Mei
authors.initials: IM
authors.lastname: Sou
authors.forename: Rico
authors.initials: R
authors.lastname: Bartak
authors.forename: Chittaranjan
authors.initials: C
authors.lastname: Ray
authors.forename: John S
authors.initials: JS
authors.lastname: Allen
mesh_terms: D000162:Acoustics; D006361:Heating / Q000379:methods*; D011829:Radiation Dosage; D012212:Rheology / Q000379:methods*; D013010:Sonication / Q000379:methods*; D013055:Spectrophotometry, Infrared / Q000379:methods*; D013817:Thermography / Q000379:methods*