Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Aumaitre, Sébastien"'
The processes that generate rogue waves on the sea surface remain a mystery. Despite their different natures, the nonlinear bending waves generated in a thin elastic plate share some similarities with waves on the surface of the sea. For instance, bo
Externí odkaz:
http://arxiv.org/abs/2412.15786
Autor:
Aumaître, Sébastien, Fauve, Stéphan
In his seminal work on turbulence, Kolmogorov made use of the stationary hypothesis to determine the Power Density Spectrum of the velocity field in turbulent flows. However to our knowledge, the constraints that stationary processes impose on the fl
Externí odkaz:
http://arxiv.org/abs/2309.01491
Diffusing-Wave Spectroscopy (DWS) allows for the direct measurement of the squared strain-rate tensor. When combined with commonly available high-speed cameras, we show that DWS gives direct access to the spatio-temporal variations of the viscous dis
Externí odkaz:
http://arxiv.org/abs/2308.16693
Autor:
Bouillaut, Vincent, Flesselles, Benoît, Miquel, Benjamin, Aumaître, Sébastien, Gallet, Basile
Three-dimensional convection driven by internal heat sources and sinks (CISS) leads to experimental and numerical scaling-laws compatible with a mixing-length - or `ultimate' - scaling regime $Nu \sim \sqrt{Ra}$. However, asymptotic analytic solution
Externí odkaz:
http://arxiv.org/abs/2211.02587
Publikováno v:
PNAS 2021 118 (44) e2105015118
The competition between turbulent convection and global rotation in planetary and stellar interiors governs the transport of heat and tracers, as well as magnetic-field generation. These objects operate in dynamical regimes ranging from weakly rotati
Externí odkaz:
http://arxiv.org/abs/2203.13860
Publikováno v:
Phys. Rev. E 103, 061001 (2021)
We study experimentally the dynamics of long waves among turbulent bending waves in a thin elastic plate set into vibration by a monochromatic forcing at a frequency $f_0$. This frequency is chosen large compared with the characteristic frequencies o
Externí odkaz:
http://arxiv.org/abs/2101.03908
Publikováno v:
PNAS September 4, 2018 115 (36) 8937-8941; first published August 22, 2018
The absorption of light or radiation drives turbulent convection inside stars, supernovae, frozen lakes and the Earth's mantle. In these contexts, the goal of laboratory and numerical studies is to determine the relation between the internal temperat
Externí odkaz:
http://arxiv.org/abs/2012.10935
Autor:
Falcon, Eric, Michel, Guillaume, Prabhudesai, Gaurav, Cazaubiel, Annette, Berhanu, Michaël, Mordant, Nicolas, Aumaitre, Sébastien, Bonnefoy, F.
We report on the observation of surface gravity wave turbulence at scales larger than the forcing ones in a large basin. In addition to the downscale transfer usually reported in gravity wave turbulence, an upscale transfer is observed, interpreted a
Externí odkaz:
http://arxiv.org/abs/2008.08467
Publikováno v:
Journal of Fluid Mechanics, 900, R1 (2020)
We report on a numerical study of turbulent convection driven by a combination of internal heat sources and sinks. Motivated by a recent experimental realisation (Lepot et al. 2018), we focus on the situation where the cooling is uniform, while the i
Externí odkaz:
http://arxiv.org/abs/2006.07109
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 2021 Nov 01. 118(44), 1-6.
Externí odkaz:
https://www.jstor.org/stable/27093589
