| Numéro |
J. Physique Lett.
Volume 36, Numéro 5, mai 1975
|
|
|---|---|---|
| Page(s) | 145 - 147 | |
| DOI | https://doi.org/10.1051/jphyslet:01975003605014500 | |
J. Physique Lett. 36, 145-147 (1975)
DOI: 10.1051/jphyslet:01975003605014500
1 Department of Planetary and Space Science, University of California, Los Angeles, USA
2 Department of Physics, University of California, Los Angeles, USA
4725Q - Convection and heat transfer.
6130 - Liquid crystals.
Key words
convection in liquids -- liquid crystals -- nematic liquid crystal -- vertical rotating cylindrical annulus -- centrifugal buoyancy -- thermal convection -- liquid crystal director -- gravitational buoyancy -- convection mode
DOI: 10.1051/jphyslet:01975003605014500
Convection driven by centrifugal buoyancy in nematics
C.R. Carrigan1 et E. Guyon21 Department of Planetary and Space Science, University of California, Los Angeles, USA
2 Department of Physics, University of California, Los Angeles, USA
Abstract
The onset of thermal convection in a nematic contained in a vertical rotating cylindrical annulus heated from the outside is studied as a function of the planar alignment of the liquid crystal director n. When n is horizontal, the results confirm data on gravitational buoyancy. An original first order like convection mode is obtained when n is parallel to the cylinder axis.
Résumé
Un nématique contenu dans un anneau cylindrique vertical en rotation est chauffé par l'extérieur. Lorsque le directeur n est horizontal, les résultats confirment ceux obtenus en convection planaire usuelle. Une transition originale du 1er ordre, induite par les effets de force de Coriolis, est obtenue quand n est parallèle à l'axe du cylindre.
4725Q - Convection and heat transfer.
6130 - Liquid crystals.
Key words
convection in liquids -- liquid crystals -- nematic liquid crystal -- vertical rotating cylindrical annulus -- centrifugal buoyancy -- thermal convection -- liquid crystal director -- gravitational buoyancy -- convection mode