Experimental study on the flow and heat transfer characteristics of thermoacoustic core

摘要

In this study, the interaction between thermal convection and acoustic oscillation with different driving powers was investigated. The temperature and velocity distributions of thermoacoustic core between the hot and cooling heat exchangers were measured by Thermal Infrared Imager and Particle Image Velocimetry (PIV) at 205. Hz, which is the resonance frequency of this thermoacoustic engine. The results indicate that acoustic oscillation has a significant effect on the thermal convection and the heat transfer is enhanced with the perturbation of acoustic streaming.