Diffusion‐Free Scaling in Rotating Spherical Rayleigh‐Bénard Convection
Abstract Direct numerical simulations are employed to reveal three distinctly different flow regions in rotating spherical Rayleigh‐Bénard convection. In the high‐latitude region I vertical (parallel to the axis of rotation) convective columns are generated between the hot inner and the cold outer s...
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| Format: | Article |
| Language: | English |
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Wiley
2021-10-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2021GL095017 |
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| author | Guiquan Wang Luca Santelli Detlef Lohse Roberto Verzicco Richard J. A. M. Stevens |
| author_facet | Guiquan Wang Luca Santelli Detlef Lohse Roberto Verzicco Richard J. A. M. Stevens |
| author_sort | Guiquan Wang |
| collection | DOAJ |
| description | Abstract Direct numerical simulations are employed to reveal three distinctly different flow regions in rotating spherical Rayleigh‐Bénard convection. In the high‐latitude region I vertical (parallel to the axis of rotation) convective columns are generated between the hot inner and the cold outer sphere. The mid‐latitude region II 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 III, the vortices are affected by the outer spherical boundary and are much shorter than in region II. |
| format | Article |
| id | doaj-art-625df087d613404c87e98ebf4a67d296 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2021-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-625df087d613404c87e98ebf4a67d2962025-08-20T03:30:53ZengWileyGeophysical Research Letters0094-82761944-80072021-10-014820n/an/a10.1029/2021GL095017Diffusion‐Free Scaling in Rotating Spherical Rayleigh‐Bénard ConvectionGuiquan Wang0Luca Santelli1Detlef Lohse2Roberto Verzicco3Richard J. A. M. Stevens4Department of Science and Technology Physics of Fluids Group and Twente Max Planck Center, Mesa+ Institute J. M. Burgers Center for Fluid Dynamics University of Twente Enschede The NetherlandsGran Sasso Science Institute L'Aquila ItalyDepartment of Science and Technology Physics of Fluids Group and Twente Max Planck Center, Mesa+ Institute J. M. Burgers Center for Fluid Dynamics University of Twente Enschede The NetherlandsDepartment of Science and Technology Physics of Fluids Group and Twente Max Planck Center, Mesa+ Institute J. M. Burgers Center for Fluid Dynamics University of Twente Enschede The NetherlandsDepartment of Science and Technology Physics of Fluids Group and Twente Max Planck Center, Mesa+ Institute J. M. Burgers Center for Fluid Dynamics University of Twente Enschede The NetherlandsAbstract Direct numerical simulations are employed to reveal three distinctly different flow regions in rotating spherical Rayleigh‐Bénard convection. In the high‐latitude region I vertical (parallel to the axis of rotation) convective columns are generated between the hot inner and the cold outer sphere. The mid‐latitude region II 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 III, the vortices are affected by the outer spherical boundary and are much shorter than in region II.https://doi.org/10.1029/2021GL095017Thermal convectionspherical shellrapidly rotatingdiffusion‐free scaling |
| spellingShingle | Guiquan Wang Luca Santelli Detlef Lohse Roberto Verzicco Richard J. A. M. Stevens Diffusion‐Free Scaling in Rotating Spherical Rayleigh‐Bénard Convection Geophysical Research Letters Thermal convection spherical shell rapidly rotating diffusion‐free scaling |
| title | Diffusion‐Free Scaling in Rotating Spherical Rayleigh‐Bénard Convection |
| title_full | Diffusion‐Free Scaling in Rotating Spherical Rayleigh‐Bénard Convection |
| title_fullStr | Diffusion‐Free Scaling in Rotating Spherical Rayleigh‐Bénard Convection |
| title_full_unstemmed | Diffusion‐Free Scaling in Rotating Spherical Rayleigh‐Bénard Convection |
| title_short | Diffusion‐Free Scaling in Rotating Spherical Rayleigh‐Bénard Convection |
| title_sort | diffusion free scaling in rotating spherical rayleigh benard convection |
| topic | Thermal convection spherical shell rapidly rotating diffusion‐free scaling |
| url | https://doi.org/10.1029/2021GL095017 |
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