Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Jonathan S. Cheng"'
Autor:
Emily K. Hawkins, Jonathan S. Cheng, Jewel A. Abbate, Timothy Pilegard, Stephan Stellmach, Keith Julien, Jonathan M. Aurnou
Publikováno v:
Fluids, Vol 8, Iss 4, p 106 (2023)
The connection between the heat transfer and characteristic flow velocities of planetary core-style convection remains poorly understood. To address this, we present novel laboratory models of rotating Rayleigh–Bénard convection in which heat and
Externí odkaz:
https://doaj.org/article/5a7b0c964bbc4c9eb58914f90636f76f
Autor:
Jonathan S. Cheng, Ibrahim Mohammad, Bitong Wang, Declan F. Keogh, Jarod M. Forer, Douglas H. Kelley
Publikováno v:
Journal of Fluid Mechanics. 949
We investigate the scaling properties of the primary flow modes and their sensitivity to aspect ratio in a liquid gallium (Prandtl number $Pr = 0.02$ ) convection system through combined laboratory experiments and numerical simulations. We survey cyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fd44f86444267e4a302ea0608f23d36
https://doi.org/10.1017/jfm.2022.778
https://doi.org/10.1017/jfm.2022.778
Autor:
Alexander M. Grannan, Jonathan S. Cheng, Ashna Aggarwal, Emily K. Hawkins, Yufan Xu, Susanne Horn, Jose Sánchez-Álvarez, Jonathan M. Aurnou
The interplay between convective, rotational and magnetic forces defines the dynamics within the electrically conducting regions of planets and stars. Yet their triadic effects are separated from one another in most studies, arguably due to the richn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0afecde389c2011553be5b92a0d502e
https://escholarship.org/uc/item/1mj2r8jn
https://escholarship.org/uc/item/1mj2r8jn
Autor:
Rodolfo Ostilla-Mónico, Andrés J. Aguirre Guzmán, Jonathan S. Cheng, Rudie Kunnen, Herman Clercx, Matteo Madonia
Publikováno v:
J Fluid Mech
Journal of Fluid Mechanics, 928:A16. Cambridge University Press
Journal of Fluid Mechanics
Journal of Fluid Mechanics, 928:A16. Cambridge University Press
Journal of Fluid Mechanics
The force balance of rotating Rayleigh–Bénard convection regimes is investigated using direct numerical simulation on a laterally periodic domain, vertically bounded by no-slip walls. We provide a comprehensive view of the interplay between govern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71a17a9e443d2fbf6c77cca19a61b299
https://europepmc.org/articles/PMC7611846/
https://europepmc.org/articles/PMC7611846/
Autor:
Rudie Kunnen, Andrés J. Aguirre Guzmán, Matteo Madonia, Herman Clercx, Rodolfo Ostilla-Mónico, Jonathan S. Cheng
Publikováno v:
Physical Review Letters, 125(21):214501. American Physical Society
Physical Review Letters
Physical Review Letters
We perform direct numerical simulations of rotating Rayleigh-Bénard convection (RRBC) of fluids with low (Pr=0.1) and high (Pr≈5) Prandtl numbers in a horizontally periodic layer with no-slip bottom and top boundaries. No-slip boundaries are known
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bafdf443b2bda79835e1d22db22a14a
https://doi.org/10.1103/physrevlett.125.214501
https://doi.org/10.1103/physrevlett.125.214501
Publikováno v:
72th Annual Meeting of the APS Division of Fluid Dynamics - Gallery of Fluid Motion.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c283b089ed2da0bc9f7c745e260da331
https://doi.org/10.1103/aps.dfd.2019.gfm.v0031
https://doi.org/10.1103/aps.dfd.2019.gfm.v0031
Autor:
Jonathan S. Cheng, Andrés J. Aguirre Guzmán, Matteo Madonia, Rudie Kunnen, Xander M. de Wit, Herman Clercx
Publikováno v:
Physical Review Fluids, 5(2):023502. American Physical Society
Physical Review Fluids
Physical Review Fluids
Recent studies of rotating Rayleigh-B\'enard convection at high rotation rates and strong thermal forcing have shown a significant discrepancy in total heat transport between experiments on a confined cylindrical domain on the one hand and simulation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57129afdfeda34d81b600ff233069a96
Autor:
Jonathan S. Cheng, Jonathan M. Aurnou
Publikováno v:
Earth and Planetary Science Letters. 436:121-129
Many dynamo studies extrapolate numerical model results to planetary conditions by empirically constructing scaling laws. The seminal work of Christensen and Aubert (2006) proposed a set of scaling laws that have been used throughout the geoscience c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c74c0b266147e41a49944b2559f7c70a
https://doi.org/10.1016/j.epsl.2015.12.004
https://doi.org/10.1016/j.epsl.2015.12.004
Publikováno v:
Geophysical & Astrophysical Fluid Dynamics, vol 112, iss 4
Geophysical and Astrophysical Fluid Dynamics, 112(4), 277-300. Taylor and Francis Ltd.
Geophysical & Astrophysical Fluid Dynamics
Geophysical and Astrophysical Fluid Dynamics, 112(4), 277-300. Taylor and Francis Ltd.
Geophysical & Astrophysical Fluid Dynamics
Many geophysical and astrophysical phenomena are driven by turbulent fluid dynamics, containing behaviors separated by tens of orders of magnitude in scale. While direct simulations have made large strides toward understanding geophysical systems, su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce86f965700a4bf67d59fbc79f312cd0
https://escholarship.org/uc/item/2rr5x8xx
https://escholarship.org/uc/item/2rr5x8xx
Autor:
Michael A. Calkins, Krista M. Soderlund, Jonathan S. Cheng, Stephan Stellmach, David Nieves, E.M. King, Keith Julien, Jonathan M. Aurnou
Publikováno v:
Aurnou, JM; Calkins, MA; Cheng, JS; Julien, K; King, EM; Nieves, D; et al.(2015). Rotating convective turbulence in Earth and planetary cores. Physics of the Earth and Planetary Interiors, 246, 52-71. doi: 10.1016/j.pepi.2015.07.001. UCLA: Retrieved from: http://www.escholarship.org/uc/item/97s3x12h
© 2015 Elsevier B.V. An accurate description of turbulent core convection is necessary in order to build robust models of planetary core processes. Towards this end, we focus here on the physics of rapidly rotating convection. In particular, we pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7875d638c2b69473500143271dafea60
https://escholarship.org/uc/item/97s3x12h
https://escholarship.org/uc/item/97s3x12h