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Characterisation of a wavy convective instability in Poiseuille-Rayleigh- Bénard flows: Linear stability analysis and non linear numerical simulations under random excitations

Xavier Nicolas 1, * S. Xin 2 N. Zoueidi 1
* Corresponding author
1 TCM
MSME - Laboratoire de Modélisation et Simulation Multi Echelle
Abstract : The aim of the present paper is to characterize a secondary convective instability of Poiseuille-Rayleigh-Bénard (PRB) mixed convection flows in air that takes the shape of wavy thermoconvective rolls, for 70≤Re≤300 and 30003Ra *. Comparisons with the experiments by Pabiou et al. [JFM, 2005] are proposed.
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https://hal-upec-upem.archives-ouvertes.fr/hal-00711387
Contributor : Xavier Nicolas <>
Submitted on : Sunday, June 24, 2012 - 4:37:46 PM
Last modification on : Wednesday, July 8, 2020 - 12:42:43 PM

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  • HAL Id : hal-00711387, version 1

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Xavier Nicolas, S. Xin, N. Zoueidi. Characterisation of a wavy convective instability in Poiseuille-Rayleigh- Bénard flows: Linear stability analysis and non linear numerical simulations under random excitations. 2010 14th International Heat Transfer Conference, IHTC14, Aug 2010, Washington, DC, United States. pp.203-208. ⟨hal-00711387⟩

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