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Abstract
Direct numerical simulations are employed to reveal three distinctly different flow regions in rotating spherical Rayleigh-Bénard convection. In the high-latitude region (Formula presented.) vertical (parallel to the axis of rotation) convective columns are generated between the hot inner and the cold outer sphere. The mid-latitude region (Formula presented.) is dominated by vertically aligned convective columns formed between the Northern and Southern hemispheres of the outer sphere. The diffusion-free scaling, which indicates bulk-dominated convection, originates from this mid-latitude region. In the equator region (Formula presented.), the vortices are affected by the outer spherical boundary and are much shorter than in region (Formula presented.).
Original language | English |
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Article number | e2021GL095017 |
Journal | Geophysical research letters |
Volume | 48 |
Issue number | 20 |
DOIs | |
Publication status | Published - 28 Oct 2021 |
Keywords
- diffusion-free scaling
- rapidly rotating
- spherical shell
- Thermal convection
- UT-Hybrid-D
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Dive into the research topics of 'Diffusion-Free Scaling in Rotating Spherical Rayleigh-Bénard Convection'. Together they form a unique fingerprint.Activities
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Diffusion-free scaling in rotating spherical Rayleigh-Bénard convection
Wang, G. (Speaker), Santelli, L. (Contributor), Lohse, D. (Contributor), Verzicco, R. (Contributor) & Stevens, R. J. A. M. (Contributor)
23 Nov 2021Activity: Talk or presentation › Oral presentation