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http://dx.doi.org/10.5050/KSNVN.2003.13.9.694

Experimental and Analytical Study of a Cooling Mechanism Using Acoustic Streaming by Ultrasonic Vibrations  

Loh, Byoung-Gook (Department of Mechanical System Engineering, Hansung University)
Lee, Dong-Ryul (School of Mechanical and Automotive Engineering, Catholic University of Daegu)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.13, no.9, 2003 , pp. 694-702 More about this Journal
Abstract
A cooling mechanism using acoustic streaming by ultrasonic vibrations and associated convective heat transfer enhancement is investigated experimentally and analytically. Acoustic streaming pattern and associated heat transfer characteristics are presented. Analytical transient temperature profile of the heated plate following Nyborgs theory is accomplished along with experimental measurement. A temperature drop of 30 C is obtained in 4 minutes with vibration amplitude of 10${\mu}{\textrm}{m}$. As the vibration amplitude is further increased to 25${\mu}{\textrm}{m}$ a temperature drop of 40 C is achieved that is the maximum temperature drop obtained with the current experimental apparatus. Analytical heat transfer solutions verified a temperature drop of 4$0^{\circ}C$ with a vibration amplitude of 25${\mu}{\textrm}{m}$ at 28.4 kHz which is experimentally obtained.
Keywords
Acoustic Streaming; Ultrasonic Vibration; Convective Cooling; Heat Transfer Enhancement; Resonance;
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