Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Pascale Garaud"'
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 2, p 184 (2024)
Fingering convection (also known as thermohaline convection) is a process that drives the vertical transport of chemical elements in regions of stellar radiative zones where the mean molecular weight increases with radius. Recently, Harrington & Gara
Externí odkaz:
https://doaj.org/article/17ddcd0094794337859c6610ea2b0320
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 220 (2024)
Shear instabilities can be the source of significant amounts of turbulent mixing in stellar radiative zones. Past attempts at modeling their effects (either theoretically or using numerical simulations) have focused on idealized geometries, where the
Externí odkaz:
https://doaj.org/article/081050fea75f48d0aad88ccf6de2a1c5
Publikováno v:
Journal of Fluid Mechanics. 949
We investigate the linear stability of a sinusoidal shear flow with an initially uniform streamwise magnetic field in the framework of incompressible magnetohydrodynamics (MHD) with finite resistivity and viscosity. This flow is known to be unstable
Autor:
Pascale Garaud, Eonho Chang
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 506:4914-4932
Zahn's widely-used model for turbulent mixing induced by rotational shear has recently been validated (with some caveats) in non-rotating shear flows. It is not clear, however, whether his model remains valid in the presence of rotation, even though
Publikováno v:
EAS Publications Series. 82:373-382
In this paper, we investigate the dynamics of convection in a spherical shell under the Boussinesq approximation but considering the compressibility which arises from a non zero adiabatic temperature gradient, a relevant quantity for gaseous objects
Autor:
Pascale Garaud
Publikováno v:
Physical Review Fluids. 6
The dynamics of fluids deep in stellar interiors is a subject that bears many similarities with geophysical fluid dynamics, with one crucial difference: the Prandtl number. The ratio of the kinematic viscosity to the thermal diffusivity is usually of
Autor:
Sara Nasab, Pascale Garaud
Preferential concentration is thought to play a key role in promoting particle growth, which is crucial to processes such as warm rain formation in clouds, planet formation, and industrial sprays. In this work, we investigate preferential concentrati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b8a3d07dbba163a4463a363da065b69
http://arxiv.org/abs/2103.08121
http://arxiv.org/abs/2103.08121
Autor:
Pascale Garaud, Sara Nasab
Publikováno v:
Physical Review Fluids. 5
Heavy particles in turbulent flows have been shown to accumulate in regions of high strain rate or low vorticity, a process otherwise known as preferential concentration. This can be observed in geophysical flows, and is inferred to occur in astrophy
When the density of a gravitationally stable fluid depends on a fast diffusing scalar and a slowly diffusing scalar of opposite contribution to the stability, ‘double diffusive’ instabilities may develop and drive convection. When the slow diffus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00199af38670525f3bddccd7c87a0072
https://escholarship.org/uc/item/1rv8r0hx
https://escholarship.org/uc/item/1rv8r0hx