Zobrazeno 1 - 10
of 24
pro vyhledávání: '"DIZÈS, STÉPHANE LE"'
In previous works, we analysed the internal shear layers excited by a viscous forcing (longitudinal libration) in a spherical shell geometry (He et al., J. Fluid Mech. 939, A3, 2022; 974, A3, 2023). We now consider the stronger inviscid forcing corre
Externí odkaz:
http://arxiv.org/abs/2411.12504
Autor:
Favier, Benjamin, Dizès, Stéphane Le
We consider inertial waves propagating in a fluid contained in a non-axisymmetric three-dimensional rotating cavity. We focus on the particular case of a fluid enclosed inside a truncated cone or frustum, which is the volume that lies between two hor
Externí odkaz:
http://arxiv.org/abs/2401.05071
Following our previous work on periodic ray paths (He et al, 2022), we study asymptotically and numerically the structure of internal shear layers for very small Ekman numbers in a three-dimensional (3D) spherical shell and in a two-dimensional (2D)
Externí odkaz:
http://arxiv.org/abs/2305.08523
This article presents a numerical analysis of the instability developing in horizontally sheared Poiseuille flow, when stratification extends along the vertical direction. Our study builds up on the previous work that originally detected the linear i
Externí odkaz:
http://arxiv.org/abs/2207.09131
We consider as base flow the stationary vortex filament solution obtained by Castillo- Castellanos et al. (2021) in the far-wake of a rotor with tip-splitting blades. The cases of a single blade and of two blades with a hub vortex are studied. In the
Externí odkaz:
http://arxiv.org/abs/2112.09211
Publikováno v:
J. Fluid Mech. 923 (2021) A29
A cylinder undergoes precession when it rotates around its axis and this axis itself rotates around another direction. In a precessing cylinder full of fluid, a steady and axisymmetric component of the azimuthal flow is generally present. This compon
Externí odkaz:
http://arxiv.org/abs/2103.14889
In this work, we present general solutions for closely spaced co-rotating helical vortices using a filament approach. For these vortex structures, helical symmetry is broken, but solutions maintain a form of spatial periodicity. We show there exists
Externí odkaz:
http://arxiv.org/abs/2012.13767
We study the short-time dynamics of a liquid ligament, held between two solid cylinders, when one is impulsively accelerated along its axis. A set of one-dimensional equations in the slender-slope approximation is used to describe the dynamics, inclu
Externí odkaz:
http://arxiv.org/abs/1502.07846
Large-scale persistent vortices are known to form easily in 2D disks via the Rossby wave or the baroclinic instability. In 3D, however, their formation and stability is a complex issue and still a matter of debate. We study the formation of vortices
Externí odkaz:
http://arxiv.org/abs/1309.3486
Autor:
Sauret, Alban, Dizès, Stéphane Le
Publikováno v:
Journal of Fluid Mechanics 718 (2013) 181-209
We investigate the flow in a spherical shell subject to a time harmonic oscillation of its rotation rate, also called longitudinal libration, when the oscillation frequency is larger than twice the mean rotation rate. In this frequency regime, no ine
Externí odkaz:
http://arxiv.org/abs/1212.1433