Abstract
This chapter contains a review of the thermoconvective instabilities that may occur in a fluid saturated porous medium. Reference is made to a horizontal porous layer. The macroscopic description of the fluid flow in a porous medium is outlined. Then, the mass, momentum and energy balance equations for porous media are described and discussed. As a first basic example of convective instabilities, the classical Darcy-Bénard problem is studied in order to highlight the main characteristics of the linear stability analysis. Extensions of the Darcy-Bénard problem based on the Forchheimer model and on the Brinkman model of momentum flow are analysed. Moreover, the effects of either a horizontal or a vertical throughflow in the layer are discussed. The contribution of the effect of viscous dissipation is investigated as a possible cause of convective instabilities.
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Barletta, A. (2010). Thermal Instabilities in a Fluid Saturated Porous Medium. In: Öchsner, A., Murch, G. (eds) Heat Transfer in Multi-Phase Materials. Advanced Structured Materials, vol 2. Springer, Berlin, Heidelberg. https://doi.org/10.1007/8611_2010_8
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DOI: https://doi.org/10.1007/8611_2010_8
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