Zobrazeno 1 - 10
of 1 288
pro vyhledávání: '"A. Perrard"'
We investigate bubble deformations in an homogeneous and isotropic turbulent flow by means of direct numerical simulations of a single bubble in turbulence. We examine interface deformations by decomposing the local radius into the spherical harmonic
Externí odkaz:
http://arxiv.org/abs/2407.16545
Polar regions are covered by sea ice, which can be seen as a thin solid elastic sheet with heterogeneous mechanical properties. The dynamics of deformation of a floating solid sheet are primarly governed by gravity, water density, and the flexural mo
Externí odkaz:
http://arxiv.org/abs/2407.16454
Autor:
Rivière, Aliénor, Perrard, Stéphane
Bubbles drive gas and chemical transfers in various industrial and geophysical context, in which flows are typically turbulent. A knowledge of the bubble size distributions is then necessary to quantify mass fluxes across interfaces. In a turbulent f
Externí odkaz:
http://arxiv.org/abs/2403.08684
Autor:
Zhang, Jishen, Perrard, Stéphane
Publikováno v:
Physical Review Fluids 9.11 (2024): 114604
We investigate the dynamics of pendulum chains immersed in turbulent boundary layers. We combine laboratory experiments and video analysis of the kinetic facade exhibits by the artist Ned Kahn, composed of large-scale clusters of centimeter-sized pla
Externí odkaz:
http://arxiv.org/abs/2307.13806
We investigate the statistics of phase fluctuations of an acoustic wave propagating through a turbulent flow in line of sight (LOS) configuration. Experiments are performed on a closed von Karman swirling flow whose boundaries are maintained at a con
Externí odkaz:
http://arxiv.org/abs/2211.09264
Turbulence is hard to control. A plethora of experimental methods have been developed to generate this ephemeral state of matter, leading to fundamental insights into its statistical and structural features as well as its onset at ever higher Reynold
Externí odkaz:
http://arxiv.org/abs/2211.00771
Publikováno v:
Journal of Hymenoptera Research, Vol 97, Iss , Pp 127-189 (2024)
Corsica stands as one of the largest Mediterranean Islands and has been the exploration ground for renowned entomologists like Charles Ferton. However, no synthesis on Corsican bees has been published so far. To fill this gap in knowledge, we propose
Externí odkaz:
https://doaj.org/article/6387373f086140c4b4dc44ea3a2a5a8b
We present experiments on large air cavities spanning a wide range of sizes relative to the Hinze scale $d_\mathrm{H}$, the scale at which turbulent stresses are balanced by surface tension, disintegrating in turbulence. For cavities with initial siz
Externí odkaz:
http://arxiv.org/abs/2202.07528
The bubble size distribution below a breaking wave is of paramount interest when quantifying mass exchanges between the atmosphere and oceans. Mass fluxes at the interface are driven by bubbles that are small compared to the Hinze scale $d_h$, the cr
Externí odkaz:
http://arxiv.org/abs/2112.06480
Even in the absence of externally applied temperature gradients, spontaneously generated temperature fluctuations arise in turbulent flows. We experimentally study these fluctuations in a closed von Karman swirling flow of air at Mach number of order
Externí odkaz:
http://arxiv.org/abs/2112.06347