Renaudière de Vaux, Sébastien and Zamansky, Rémi
and Bergez, Wladimir
and Tordjeman, Philippe
and Haquet, Jean-François
Magnetoconvection transient dynamics by numerical simulation.
(2017)
The European Physical Journal E - Soft Matter, 40 (13). 1-11. ISSN 1292-8941
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 1MB |
Official URL: http://dx.doi.org/10.1140/epje/i2017-11499-2
Abstract
We investigate the transient and stationary buoyant motion of the Rayleigh-Bénard instability when the fluid layer is subjected to a vertical, steady magnetic field. For Rayleigh number, Ra, in the range 10^3-10^6, and Hartmann number, Ha, between 0 and 100, we performed three-dimensional direct numerical simulations. To predict the growth rate and the wavelength of the initial regime observed with the numerical simulations, we developed the linear stability analysis beyond marginal stability for this problem. We analyzed the pattern of the flow from linear to nonlinear regime. We observe the evolution of steady state patterns depending on Ra/Ha2 and Ha. In addition, in the nonlinear regime, the averaged kinetic energy is found to depend on Ra and to be independent of Ha in the studied range.
Item Type: | Article |
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Additional Information: | Thanks to Srpinger editor. The original PDF of the article can be found at: https://link.springer.com/article/10.1140/epje/i2017-11499-2 |
HAL Id: | hal-01643599 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE) 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) |
Laboratory name: | |
Funders: | CEA |
Statistics: | download |
Deposited On: | 02 Oct 2017 10:35 |
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