Mechanism of the heat exchange promotion by superimposing the external sound wave in standing-wave thermoacoustic system
-
Published:2021-12-17
Issue:
Volume:
Page:
-
ISSN:0021-4922
-
Container-title:Japanese Journal of Applied Physics
-
language:
-
Short-container-title:Jpn. J. Appl. Phys.
Author:
Hiramatsu Koto,
SAKAMOTO Shin-ichiORCID,
Watanabe Yoshiaki
Abstract
Abstract
For improvement of energy conversion efficiency, sound wave is superimposed with a loudspeaker to the working fluid in the stack. By using this method the work-flow generation of the stack was enhanced. To analyze this enhancement mechanism, the thickness of the boundary layer and the heat exchange area in the stack are calculated from the view point of heat exchange circumstance. The effect of the heat exchange circumstance on the particle displacement and heat flow is investigated. As a result, it is confirmed that the superimposed sound wave improves the heat exchange circumstance and then the thermoacoustic phenomenon is enhanced.
Funder
JSPS Grant-in-Aid for Challenging Exploratory Research
JSPS Grant-in-Aid for Young Scientists
Program for Fostering Regional Innovation
Grant-in-Aid for Scientific Research
JST Super Cluster Program
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering