Space dependence of acoustic power and heat flux in the thermoacoustic effect

Abstract

The dependence of heat flux with the perpendicular distance to a single plate in a stationary plane wave and of the acoustic power absorbed or generated is obtained. The analysis shows the simultaneous existence of zones near the plate where the fluid does work and others where work is done on the fluid. Depending on the mean temperature gradient one effect dominates over the other. An analogous behavior occurs with the hydrodynamic heat flux parallel to the plate. Also shown is the relation between the conductive heat flux perpendicular to the plate and the absorbed or generated acoustic power.