J. Phys. IV France 02 (1992) C1-601-C1-604
AMPLIFICATION THERMIQUE ET LIMITE DE STABILITÉ DES OSCILLATIONS ACOUSTIQUES DANS LE TUBE DE RIJKEJ.-L. PEUBE, S. SOUDKI and Y. GERVAIS
Laboratoire d'Etudes Aérodynamiques, 40 Avenue du Recteur Pineau, F-86022 Poitiers cedex, France
We give here the quantitative expression of the thermoacoustic power resulting of the interaction between acoustic waves and a heat source. According to a stationary acoustic field superposed to a mean flow in a cavity containing a heat source (Rijke effect), the thermoacoustic power and an efficiency criterion of the interaction are explicitly given from the analysis of the unsteady heat transfer between a hot wire and a weakly disturbed laminar flow at high Reynolds number.
© EDP Sciences 1992