<td class= (Institución)
   (Nuevo usuario)
Ayuda  | Contacto  |  Castellano English  

Dadun > Depósito Académico > Facultad de Ciencias > Departamento de Física y Matemática Aplicada > DA - Ciencias - Física - Artículos de Revista >

Origin of waves in surface-tension-driven convection
Autor(es) : Garcimartin, A. (Ángel)
Mukolobwiez, N. (Nathalie)
Daviaud, F. (F.)
Palabras clave : Materias Investigacion::Física
Fecha incorporación: 1997
Editorial : American Physical Society
ISSN: 1539-3755
Cita: Phys Rev E, 56 (2), pp. 1699-1705
Waves appear in a liquid layer with a free surface if a sufficiently high horizontal temperature gradient is imposed. These waves have been compared to the hydrothermal waves predicted by a linear stability analysis of a parallel flow. However, depending on the experimental configurations, significant differences with theory are found. We show that there exists another kind of wave that cannot be explained by previous analysis. Our aim is to investigate which is the mechanism leading to this instability. Differential interferometry is used to obtain quantitative information on the temperature field. Experimental evidence is presented suggesting that these waves are the result of a boundary layer instability: the roll near the hot wall begins to oscillate, and the perturbations are dragged and amplified downflow. This mechanism could explain discrepancies between theory and some experimental observations.
Enlace permanente: http://hdl.handle.net/10171/2126
Aparece en las colecciones: DA - Ciencias - Física - Artículos de Revista

Ficheros en este registro:
Fichero:  1997.PRE56.pdf
Tamaño:  2,46 MB
Formato:  Adobe PDF
 Visualizar / Abrir 

Los ítems de Dadun están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.