OBSERVATION OF THE ULTIMATE REGIME IN RAYLEIGH-BENARD CONVECTION

Authors
CHAVANNE X CHILLA F CASTAING B HEBRAL B CHABAUD B CHAUSSY J
Citation
X. Chavanne et al., OBSERVATION OF THE ULTIMATE REGIME IN RAYLEIGH-BENARD CONVECTION, Physical review letters, 79(19), 1997, pp. 3648-3651
Citations number
14
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
79
Issue
19
Year of publication
1997
Pages
3648 - 3651
Database
ISI
SICI code
0031-9007(1997)79:19<3648:OOTURI>2.0.ZU;2-K
Abstract
In a low temperature He gas Rayleigh-Benard experiment, Rayleigh numbe rs from 10(3) to more than 10(14) are explored. Local velocity is esti mated through the time lag between two closeby temperature probes. Thi s allows characterizing of the high Rayleigh regime (Ra > 10(11)) as a fully turbulent one, possibly corresponding to the asymptotic regime predicted by R. Kraichnan [Phys. Fluids 5, 1374 (1962)]. [S0031-9007(9 7)04440-2].