| Numéro |
J. Phys. II France
Volume 3, Numéro 6, June 1993
|
|
|---|---|---|
| Page(s) | 767 - 773 | |
| DOI | https://doi.org/10.1051/jp2:1993166 | |
DOI: 10.1051/jp2:1993166
J. Phys. II France 3 (1993) 767-773
Laboratoire de Physique, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon, France
43.85 - 47.25
© Les Editions de Physique 1993
J. Phys. II France 3 (1993) 767-773
Ultrasound scattering by buoyancy driven flows
J. F. Pinton, C. Laroche, S. Fauve and C. BaudetLaboratoire de Physique, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon, France
(Received 18 January 1993, accepted 5 April 1993)
Abstract
We show experimentally that the scattering of sound by temperature inhomo-geneities may be used as a non-intrusive method
to investigate the space-time characteristics of buoyancy-driven flows. We study the thermal plume generated in air by a horizontal
hot wire as a test flow: we show that the onset of time-dependent instabilities as well as the advection of thermal inhomogeneities
by the mean flow can be studied with our measurement technique.
43.85 - 47.25
© Les Editions de Physique 1993