Differential Rotation as an Axisymmetric Resonant Mode of Convection
نویسندگان
چکیده
منابع مشابه
Resonant mode interactions in Rayleigh-Bénard convection
In systems with midplane reflection symmetry the dominant spatial resonance is the 1:3 resonance. Numerical continuation is used to study this and other 1:2k11 resonances in two-dimensional convection between no-slip perfectly conducting horizontal plates. Periodic boundary conditions are imposed in the horizontal. These resonances influence the process of wave number selection at moderate Rayl...
متن کاملNon-axisymmetric instabilities in shocked accretion flows with differential rotation
The linear stability of a shocked isothermal accretion flow onto a black hole is investigated in the inviscid limit. The outer shock solution, which was previously found to be stable with respect to axisymmetric perturbations, is, however, generally unstable to non-axisymmetric ones. Eigenmodes and growth rates are obtained by numerical integration of the linearized equations. The mechanism of ...
متن کاملEffect of heat flux on differential rotation in turbulent convection.
We studied the effect of the turbulent heat flux on the Reynolds stresses in a rotating turbulent convection. To this end we solved a coupled system of dynamical equations which includes the equations for the Reynolds stresses, the entropy fluctuations, and the turbulent heat flux. We used a spectral tau approximation in order to close the system of dynamical equations. We found that the ratio ...
متن کاملTurbulent convection and differential rotation in spherical shells
Rotation is a general phenomenon in astrophysical systems on scales from planets to giant galaxy clusters. It is established during the formation of the system under gravitational compression. Typically the rotation rate is greatly enhanced during this process (Thompson et al. 2003). Rotation of stars defines their shapes and drives the internal circulation which redistributes chemical elements...
متن کاملTravelling circular waves in axisymmetric rotating convection
Rayleigh–Bénard convection in a finite rotating cylinder of moderate aspect ratio (radius four times the depth) is investigated numerically for a fluid of Prandtl number equal to 7 (corresponding essentially to water). We consider the effects of rotation from both the Coriolis force and the centrifugal force and find that the centrifugal force plays a significant dynamic role. In this initial s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1991
ISSN: 0252-9211
DOI: 10.1017/s0252921100079598