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of 185
pro vyhledávání: '"Scheel, Janet"'
Autor:
Samuel, Roshan J., Bode, Mathis, Scheel, Janet D., Sreenivasan, Katepalli R., Schumacher, Jörg
Publikováno v:
J. Fluid Mech. 996 (2024) A49
We study the dynamics of thermal and momentum boundary regions in three-dimensional direct numerical simulations of Rayleigh-B\'enard convection for the Rayleigh number range $10^5 \le Ra \le 10^{11}$ and $Pr=0.7$. Using a Cartesian slab with horizon
Externí odkaz:
http://arxiv.org/abs/2403.12877
Publikováno v:
Phys. Rev. Research 4, 043098 (2022)
Inverse cascades of kinetic energy and thermal variance in the subset of vertically homogeneous modes in spectral space are found to cause a slow aggregation to a pair of convective supergranules that eventually fill the whole horizontally extended,
Externí odkaz:
http://arxiv.org/abs/2207.12606
Publikováno v:
Phys. Rev. Research 3, 013231 (2021)
Turbulent convection processes in nature are often found to be organized in a hierarchy of plume structures and flow patterns. The gradual aggregation of convection cells or granules to a supergranule which eventually fills the whole horizontal layer
Externí odkaz:
http://arxiv.org/abs/2010.13383
Publikováno v:
Nature Communications 9, 2118 (2018)
Turbulent Rayleigh-B\'enard convection displays a large-scale order in the form of rolls and cells on lengths larger than the layer height once the fluctuations of temperature and velocity are removed. These turbulent superstructures are reminiscent
Externí odkaz:
http://arxiv.org/abs/1801.04478
Autor:
Scheel, Janet D., Schumacher, Jörg
We discuss two aspects of turbulent Rayleigh-B\'{e}nard convection (RBC) on the basis of high-resolution direct numerical simulations in a unique setting; a closed cylindrical cell of aspect ratio of one. First, we present a comprehensive comparison
Externí odkaz:
http://arxiv.org/abs/1711.10072
Akademický článek
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Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 2020 Dec 01. 117(48), 30024-30024.
Externí odkaz:
https://www.jstor.org/stable/26971063
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 2020 Apr 01. 117(14), 7594-7598.
Externí odkaz:
https://www.jstor.org/stable/26929701
Publikováno v:
Phys. Rev. Fluids (2016) vol. 1, 084402
The boundary layer structure of the velocity and temperature fields in turbulent Rayleigh-Benard flows in closed cylindrical cells of unit aspect ratio is revisited from a transitional and turbulent viscous boundary layer perspective. When the Raylei
Externí odkaz:
http://arxiv.org/abs/1612.02931
Autor:
Schumacher, Joerg, Scheel, Janet D.
Publikováno v:
Phys. Rev. E (2016) vol. 94, 043104
An extreme dissipation event in the bulk of a closed three-dimensional turbulent convection cell is found to be correlated with a strong reduction of the large-scale circulation flow in the system that happens at the same time as a plume emission eve
Externí odkaz:
http://arxiv.org/abs/1609.05026