Experiments on convection in a rotating hemispherical shell: Transition to chaos
- 7 December 1993
- journal article
- Published by American Geophysical Union (AGU) in Geophysical Research Letters
- Vol. 20 (23) , 2587-2590
- https://doi.org/10.1029/93gl02817
Abstract
Thermal convection in a self‐gravitating rotating fluid shell is modeled using a hemispherical fluid shell that can be rotated about its axis of symmetry. In this apparatus, a tertiary convective state begins to exist at a Rayleigh number approximately equal to 2.1 times the critical value for the onset of convection (RC1). This state is characterized by the coexistence of three waves. In this tertiary state noise is always present. At a slightly higher Rayleigh number, a strong interaction was observed to develop. Frequency locking takes place at 2.4 RC1. Later, the flow exhibits chaotic behavior as shown by the broad band Fourier spectra of the temperature records. Planetary implications of these findings are discussed.This publication has 22 references indexed in Scilit:
- An experimental approach to thermochemical convection in the Earth's coreGeophysical Research Letters, 1992
- Experiments on convection in rotating hemispherical shells: Transition to a quasi‐periodic stateGeophysical Research Letters, 1992
- Kinematic Properties of Wave Amplitude Vacillation in a Thermally Driven Rotating FluidJournal of the Atmospheric Sciences, 1989
- An experimental investigation of convection in a rotating sphere subject to time varying thermal boundary conditionsGeophysical & Astrophysical Fluid Dynamics, 1986
- A model of mean zonal flows in the major planetsGeophysical & Astrophysical Fluid Dynamics, 1983
- An experimental and theoretical investigation of the onset of convection in rotating spherical shellsJournal of Fluid Mechanics, 1983
- Thermal instabilities in rapidly rotating systemsJournal of Fluid Mechanics, 1970
- Nonaxisymmetric Convection in a Rotating Spherical ShellThe Astrophysical Journal, 1970
- Differential Rotation in Stellar Convection ZonesThe Astrophysical Journal, 1970
- Convective Spherical Shell: II. With RotationJournal of the Atmospheric Sciences, 1968