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Characteristics of convection and overshooting in RGB and AGB stars
RGB and AGB stars: convection of stars: turbulent convection model: con-vective overshooting
2011/9/28
Based on the turbulent convection model (TCM) of Li & Yang (2007), we have studied the characteristics of turbulent convection in the envelopes of 2 and 5M stars at the RGB and AGB phases. The TCM has...
A comprehensive understanding of the solar magnetic cycle requires detailed modeling of the solar interior including the maintenance and variation of large scale flows (differential rotation and merid...
Dynamos in Stellar Convection Zones: of Wreaths and Cycles
Dynamos Stellar Convection Zones Wreaths and Cycles
2010/11/15
We live near a magnetic star whose cycles of activity are driven by dynamo action beneath the surface. In the solar convection zone, rotation couples with plasma motions to build
highly organized mag...
Scaling laws for convection and jet speeds in the giant planets
Scaling laws for convection jet speeds giant planets
2010/11/11
Three dimensional studies of convection in deep spherical shells have been used to test the hypothesis that the strong jet streams on Jupiter, Saturn, Uranus, and Neptune result from convection throug...
Main-sequence massive stars possess convective cores that likely harbor strong dy-namo action. To assess the role of core convection in building magnetic fields within these stars, we employ the 3-D a...
Numerically determined transport laws for fingering ("thermohaline") convection in astrophysics
hydrodynamics instabilities turbulence
2010/11/16
We present the first three-dimensional simulations of fingering convection performed in a parameter regime close to the one relevant for astrophysics, and reveal the existence of simple asymptotic sca...
What happened to the other Mohicans? Realistic models of metallicity dilution by fingering convection and observational implications
hydrodynamics instabilities turbulence planets and satellites
2010/11/16
When a planet falls onto the surface of its host star, the added high-metallicity material does not remain in the surface layers, as often assumed, but is diluted into the interior through fingering (...
Global-scale wreath-building dynamos in stellar convection zones
convection interiors magnetic fields stars rotation
2010/11/10
When stars like our Sun are young they rotate rapidly and are very magnetically active. We explore dynamo action in rapidly rotating suns with the 3-D MHD anelastic spherical harmonic (ASH) code. The ...
Surface convection and red giants radii measurements
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/7
The phenomenological models of convection use characteristic length scales they do not determine but that are chosen to fit solar or stellar observations. We investigate if changes of these length sca...
Reynolds stress and heat flux in spherical shell convection
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/27
Turbulent fluxes of angular momentum and heat due to rotationally affected convection play a key role in determining differential rotation of stars.
专著信息
书名
A new asymptotic method for the analysis of convection in a rapidly rotating sphere
语种
英文
撰写或编译
作者
Zhang Keke,Xinhao Liao
第一作者单位
出版社
Journal of Fluid Mechanics, 2004,Vol. 504: 327-340
出版地
出版日期...