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Influence of vibration on soret-driven convection in porous media

Charrier-Mojtabi, Marie-Catherine and Razi, Y.P. and Maliwan, Kittinan and Mojtabi, Abdelkader Influence of vibration on soret-driven convection in porous media. (2004) Numerical Heat Transfer, Part A: Applications, 46 (10). 981-993. ISSN 1040-7782

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Official URL: https://doi.org/10.1080/10407780490517638


Two-dimensional thermosolutal natural convection with Soret effect under the simultaneous action of vibrational and gravitational accelerations is investigated. We consider a porous cavity saturated by a binary mixture and adopt the time-averaging formulation. For an infinite horizontal layer, a stability analysis is performed from which the threshold of stability is determined. Numerical simulations, using a pseudo-spectral Chebyshev collocation method, are performed to describe the convective motion. The problem is investigated for different aspect ratios with various directions of vibration. It is concluded that, for both the stationary and the Hopf bifurcation, the vertical vibration has a stabilizing effect while the horizontal vibration has a destabilizing effect on the onset of convection.

Item Type:Article
HAL Id:hal-02134673
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:16 Nov 2018 16:12

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