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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.
Title: | Hydrothermal waves and corotating rolls in laterally heated convection in simple liquids. |
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Author/s: |
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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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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
Item ID: | 21701 |
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DC Identifier: | https://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 |