A Numerical Study on the Enhancement of Heat Transfer by Pressure Distributions in Acoustic Fields

Article type: Research Article

Authors: Oh, Y. K. | Yang, H. D.

Affiliations: Department of Mechatronics Engineering, Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju 501-759, Korea. E-mail: ygoh@mail.chosun.ac.kr | Department of Precision Mechanical Engineering, The Graduate School of Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju 501-759, Korea

Abstract: The enhancement of heat transfer in a cavity was investigated in the absence of and in the presence of acoustic streaming induced by ultrasonic waves. The present study provides the experimental and numerical results of heat transfer in the acoustic fields. The enhancement of heat transfer was experimentally investigated in the presence of acoustic streaming and was compared with the profiles of acoustic pressure calculated by the numerical analysis. A coupled finite element-boundary element method (FE-BEM) was applied for a numerical analysis. Experimental and numerical studies clearly show that pressure variations are closely related to the enhancement of heat transfer in the acoustic fields.

Keywords: Acoustic pressure, Acoustic streaming, Particle imaging velocimetry (PIV), Coupled FE-BEM, Ultrasonic wave

Journal: Journal of Visualization, vol. 8, no. 1, pp. 73-81, 2005