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Pattern selection and restricted vortex dynamics by spatial periodic forcing in rapidly rotating Rayleigh-Bénard convection
Shan-Shan Ding, Hong-Lin Zhang, Dong-Tian Chen +2
Pattern forming with externally imposed symmetry is ubiquitous in nature but lightly studied.We present experimental studies of pattern formation and selection by spatial periodic…
Inverse centrifugal effect induced by collective motion of vortices in rotating turbulent convection
Shan-Shan Ding, Kai Leong Chong, Jun-Qiang Shi +4
When a fluid system is subject to strong rotation, centrifugal fluid motion is expected, i.e., denser (lighter) fluid moves outward (inward) from (toward) the axis of rotation. Her…
Fine vortex structure and flow transition to the geostrophic regime in rotating Rayleigh-Bénard convection
Jun-Qiang Shi, Hao-Yuan Lu, Shan-Shan Ding +1
We present spatial-resolved measurements of the columnar vortex structures in rotating Rayleigh-Bénard convection. The scaled radial profiles of the azimuthal velocity and…
Anomalous vortex motion induced by asymmetric vorticity distribution in rapidly rotating thermal convection
Shan-Shan Ding, Kai Leong Chong, Jun-Qiang Shi +4
In rotating Rayleigh-Bénard convection, columnar vortices advect horizontally in a stochastic manner. When the centrifugal buoyancy is present the vortices exhibit radial motions t…
Crossover from ballistic to diffusive vortex motion in convection
Kai Leong Chong, Jun-Qiang Shi, Shanshan Ding +4
Vortices play an unique role in heat and momentum transports in astro- and geo-physics, and it is also the origin of the Earth's dynamo. A question existing for a long time is whet…