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Chapitre D'ouvrage Année : 2008

Thermal Vibrational Convection in a Porous Medium Saturated by a Pure or Binary Fluid

Résumé

What is Thermal Vibration? The importance of mechanical vibration, as a source of pattern generating mech-anism on the surface of a container filled with liquid, was recognized as early as the beginning of the 19th century by Faraday (1831). However, its importance as a mechanism controlling the convective motion has only been recognized during the 20th century. Originally, mechanical vibration was used in mathematical modeling aimed at increasing the stability threshold of thermo-fluid system (Gershuni et al. 1970, Gresho and Sani 1970). The space exploration and especially the benefits expected from material production in space stations accelerated its development (Alexander 1994). Formally, the thermo-vibrational convection studies concern the form of a mean flowin a confined cavity filled with a fluid presenting temperature non-homogeneities. Compared to the gravity-induced convection, this type of convection presents the advantage that it may exist under weightlessness condition. Under micro-gravity conditions, the gravitational force is reduced drastically. However this situation may cause other forces, which under earth conditions are of minor importance, to be more significant.
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hal-04353842 , version 1 (19-12-2023)

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  • HAL Id : hal-04353842 , version 1

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Yazdan Pedramrazi, Marie Catherine Charrier Mojtabi, Abdelkader Mojtabi. Thermal Vibrational Convection in a Porous Medium Saturated by a Pure or Binary Fluid. Springer. Emerging topics in heat and mass transfer in porous media : from bioengineering and microelectronics to nanotechnology, 22, pp.149-179, 2008, 978-1-4020-8178-1. ⟨hal-04353842⟩
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