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Journal articles
Travelling and Standing Waves in a Spatially Forced 2D Convection Experiment
Abstract : Rayleigh-Bénard convection is studied in a rectangular geometry with a spatial forcing induced in one direction by electric wires. When using fluids of relatively large Prandtl numbers, this forcing allows the existence of a perfect one-dimensional pattern until the onset of bimodal convection. The transition to bidimensional convection is studied for increasing Rayleigh number and reveals the existence of different spatio-temporal regimes depending on the value of the forcing. At the onset of the transition, a stationary pattern is observed for weak forcing, while travelling waves are evidenced for strong forcing. Both behaviours give place to collective oscillations at higher Rayleigh number.
https://hal-cea.archives-ouvertes.fr/cea-01374013
Contributor : Dominique Girard <>
Submitted on : Thursday, September 29, 2016 - 3:30:56 PM
Last modification on : Monday, February 10, 2020 - 6:12:21 PM
Long-term archiving on: : Friday, December 30, 2016 - 2:14:09 PM
Contributor : Dominique Girard <>
Submitted on : Thursday, September 29, 2016 - 3:30:56 PM
Last modification on : Monday, February 10, 2020 - 6:12:21 PM
Long-term archiving on: : Friday, December 30, 2016 - 2:14:09 PM
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epl_16_7.pdf
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