Acoustic streaming in annular thermoacoustic prime-movers
The theory of acoustic streaming in an annular thermoacoustic prime-mover is developed. It is predicted that above the threshold for traveling wave excitation the device considered (which does not contain any moving parts or externally imposed pressure gradients) produces circulation of fluid. The heat flux carried by this directional mass flow inside the thermoacoustic stack exceeds (or is comparable with) the heat flux associated with the acoustically induced increase of thermal diffusivity of the gas. The effects investigated are important for optimization of the performance of thermoacoustic devices.
Gusev
V
Laboratoire de Physique de l'Etat Condense, UPRESA-CNRS 6087, Faculte des Sciences and Ecole Nationale Superieure d'Ingenieurs du Mans, Universite du Maine, Le Mans, France.
Job
S
Bailliet
H
Lotton
P
Bruneau
M