Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Thierry Alboussière"'
Autor:
Franck Plunian, Thierry Alboussière
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013321 (2020)
A milestone of dynamo theory is Cowling's theorem, known in its modern form as the impossibility for an axisymmetric velocity field to generate an axisymmetric magnetic field by dynamo action. Using anisotropic electrical conductivity, we show that a
Externí odkaz:
https://doaj.org/article/1fab31f01c4e4463a68bd583ea300853
Publikováno v:
Frontiers in Earth Science, Vol 6 (2018)
The convective state of the top of Earth's outer core is still under debate. Conflicting evidence from seismology and geomagnetism provides arguments for and against a thick stably stratified layer below the core-mantle boundary. Mineral physics and
Externí odkaz:
https://doaj.org/article/022fa9e8d5a746aeba1b0b4541c70529
Publikováno v:
Geophysical Journal International
Geophysical Journal International, 2022, 230, pp.932-956. ⟨10.1093/gji/ggac102⟩
Geophysical Journal International, 2022, 230 (2), pp.932-956. ⟨10.1093/gji/ggac102⟩
Geophysical Journal International, 2022, 230, pp.932-956. ⟨10.1093/gji/ggac102⟩
Geophysical Journal International, 2022, 230 (2), pp.932-956. ⟨10.1093/gji/ggac102⟩
SUMMARY The numerical simulations of convection inside the mantle of the Earth or of terrestrial planets have been based on approximate equations of fluid dynamics. A common approximation is the neglect of the inertia term which is certainly reasonab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78fa6989fcfae0188b9b5f462a7c8847
https://doi.org/10.1093/gji/ggac102
https://doi.org/10.1093/gji/ggac102
Publikováno v:
Journal of Fluid Mechanics
Journal of Fluid Mechanics, 2022, 940, pp.A9. ⟨10.1017/jfm.2022.216⟩
Journal of Fluid Mechanics, 2022, 940, pp.A9. ⟨10.1017/jfm.2022.216⟩
In the quest to understand the basic universal features of compressible convection, one would like to disentangle genuine consequences of compression from spatial variations of transport properties. In the present work, we consider a very peculiar eq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::538ef7d2c091b3b1551b466bbe2468a5
https://doi.org/10.1017/jfm.2022.216
https://doi.org/10.1017/jfm.2022.216
Autor:
Franck Plunian, Thierry Alboussière
In the limit of large magnetic Reynolds numbers, it is shown that a smooth differential rotation can lead to fast dynamo action, provided that the electrical conductivity or magnetic permeability is anisotropic. If the shear is infinite, for example
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::868219aa8c354a165ea68ed92102e78a
Autor:
Thierry Alboussière, Stéphane Labrosse, F. Dubuffet, Yanick Ricard, Jezabel Curbelo, Lucia Duarte
Publikováno v:
Journal of Fluid Mechanics
Journal of Fluid Mechanics, 2019, 873, pp.646-687. ⟨10.1017/jfm.2019.420⟩
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2019, 873, pp.646-687. ⟨10.1017/jfm.2019.420⟩
Journal of Fluid Mechanics, 2019, 873, pp.646-687. ⟨10.1017/jfm.2019.420⟩
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2019, 873, pp.646-687. ⟨10.1017/jfm.2019.420⟩
We developed a numerical method for the set of equations governing fully compressible convection in the limit of infinite Prandtl numbers. Reduced models have also been analysed, such as the anelastic approximation and the anelastic liquid approximat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::349f045a4f1d7eb64873439f10e17c6d
https://doi.org/10.1017/jfm.2019.420
https://doi.org/10.1017/jfm.2019.420
Autor:
Adrien Morison, Antoine Rozel, Daniela Bolrão, Stéphane Labrosse, Maxim D. Ballmer, Paul J. Tackley, Renaud Deguen, Thierry Alboussière
The early evolution of the Earth was likely affected by a large scale magma ocean, in particular in the aftermath of the giant impact that formed the Moon. The exact structure and dynamics of the Earth following that event is unknown but several poss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72cf0f8e7548d947852dd2ffd1923f26
https://doi.org/10.5194/egusphere-egu21-8013
https://doi.org/10.5194/egusphere-egu21-8013
Autor:
Paul J. Tackley, Daniela Bolrão, Adrien Morison, Antoine Rozel, Stéphane Labrosse, Maxim D. Ballmer, Thierry Alboussière, Renaud Deguen
The light plagioclase-enriched crust as well as the KREEP layer at the surface of the Moon are believed to be remnants of the bottom-up crystallization of a global Lunar Magma Ocean. In such a setup, the primitive Lunar solid mantle is coated by a li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31782a8ed2363ed72587f99a235d5913
https://doi.org/10.5194/egusphere-egu21-6258
https://doi.org/10.5194/egusphere-egu21-6258
Autor:
Franck Plunian, Thierry Alboussière
Publikováno v:
Journal of Plasma Physics
Journal of Plasma Physics, 2021, 87, ⟨10.1017/S0022377820001634⟩
Journal of Plasma Physics, 2021, 87, ⟨10.1017/S0022377820001634⟩
The effect on dynamo action of an anisotropic electrical conductivity conjugated to an anisotropic magnetic permeability is considered. Not only is the dynamo fully axisymmetric, but it requires only a simple differential rotation, which twice challe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a22bee1e3b3ceeef1dc9399a7a55b543
Publikováno v:
Physical Review Fluids
Physical Review Fluids, 2021, 6, pp.1281-1293. ⟨10.1103/PhysRevFluids.6.110501⟩
Physical Review Fluids, 2021, 6, pp.1281-1293. ⟨10.1103/PhysRevFluids.6.110501⟩
International audience; This paper is associated with a video winner of a 2020 American Physical Society's Division of Fluid Dynamics (DFD) Gallery of Fluid Motion Award for work presented at the DFD Gallery of Fluid Motion. The original video is ava
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b7e46983bf069173e85bd797addd932
https://hal-insu.archives-ouvertes.fr/insu-03584326
https://hal-insu.archives-ouvertes.fr/insu-03584326