Hydrothermal waves and corotating rolls in laterally heated convection in simple liquids.

Pérez-García, Carlos and Madruga Sánchez, Santiago and Echebarria, Blas and Lebon, Georgy (2004). Hydrothermal waves and corotating rolls in laterally heated convection in simple liquids.. "Journal of Non-Equilibrium Thermodynamics", v. 29 ; pp. 377-388. ISSN 1437-4358. https://doi.org/10.1515/JNETDY.2004.062.

Description

Title: Hydrothermal waves and corotating rolls in laterally heated convection in simple liquids.
Author/s:
  • Pérez-García, Carlos
  • Madruga Sánchez, Santiago
  • Echebarria, Blas
  • Lebon, Georgy
Item Type: Article
Título de Revista/Publicación: Journal of Non-Equilibrium Thermodynamics
Date: 2004
ISSN: 1437-4358
Volume: 29
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Fundamentos Matemáticos de la Tecnología Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The stability of a liquid layer with an undeformable interface open to the atmo- sphere, subjected to a horizontal temperature gradient, is theoretically analysed. Buoyancy and surface tension forces give rise to a basic flow for any temperature dif- ference applied on the system. Depending on the liquid depth, this basic flow is desta- bilised either by an oscillatory instability, giving rise to the so-called hydrothermal waves, or by a stationary instability leading to corotating rolls. Oscillatory perturba- tions are driven by the basic flow and therefore one must distinguish between convec- tive and absolute thresholds. The instability mechanisms as well as the di¿erent re- gimes observed in experiments are discussed. The calculations are performed for a fluid used in recent experiments, namely silicone oil of 0.65 cSt ðPr 1?4 10Þ. In partic- ular, it is shown that two branches of absolute instability exist, which may be related to the two types of hydrothermal waves observed experimentally

More information

Item ID: 21701
DC Identifier: http://oa.upm.es/21701/
OAI Identifier: oai:oa.upm.es:21701
DOI: 10.1515/JNETDY.2004.062
Deposited by: Memoria Investigacion
Deposited on: 11 Feb 2014 15:36
Last Modified: 22 Sep 2014 11:26
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