N
Nathanaël Schaeffer
Researcher at University of Grenoble
Publications - 72
Citations - 1908
Nathanaël Schaeffer is an academic researcher from University of Grenoble. The author has contributed to research in topics: Magnetic field & Dynamo theory. The author has an hindex of 24, co-authored 69 publications receiving 1616 citations. Previous affiliations of Nathanaël Schaeffer include Joseph Fourier University & École Normale Supérieure.
Papers
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Efficient spherical harmonic transforms aimed at pseudospectral numerical simulations
TL;DR: In this paper, a vectorized version of the spherical harmonic transform (SHT) algorithm based on the Gauss-Legendre quadrature has been implemented in the SHTns library, which includes scalar and vector transforms.
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Turbulent geodynamo simulations: a leap towards Earth's core
TL;DR: In this paper, a sequence of three convection-driven simulations in a rapidly rotating spherical shell is used to reach realistic turbulent regime in direct numerical simulations of the geodynamo.
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Quasigeostrophic model of the instabilities of the Stewartson layer in flat and depth-varying containers
TL;DR: In this paper, a quasigeostrophic (QG) model was developed to enforce mass conservation properly, and valid for any container provided that the top and bottom have finite slopes.
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Performance benchmarks for a next generation numerical dynamo model
Hiroaki Matsui,E. M. Heien,Julien Aubert,Jonathan M. Aurnou,M. S. Avery,Ben Maurice Brown,Bruce A. Buffett,Friedrich H. Busse,Ulrich R. Christensen,Christopher J. Davies,Nicholas Featherstone,Thomas Gastine,Gary A. Glatzmaier,David Gubbins,Jean-Luc Guermond,Yoshi-Yuki Hayashi,Rainer Hollerbach,Lorraine J. Hwang,Andrew Jackson,Chris A. Jones,Weiyuan Jiang,Louise H. Kellogg,Weijia Kuang,Maylis Landeau,Philippe Marti,Peter Olson,Adolfo Ribeiro,Youhei Sasaki,Nathanaël Schaeffer,Radostin D. Simitev,Andrey Sheyko,Luis Leopoldo Silva,Sabine Stanley,Sabine Stanley,Futoshi Takahashi,Shin-ichi Takehiro,Johannes Wicht,Ashley P. Willis +37 more
TL;DR: In this paper, the authors assess which methods are most promising for the next generation of supercomputers, which will offer access to O(106) processor cores for large problems.
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Rationale and geophysical evidence for quasi-geostrophic rapid dynamics within the Earth's outer core
TL;DR: In this paper, the authors present arguments supporting the hypothesis that the flow in the Earth's core, for the time scales of the historical secular variation, is well described by a quasi-geostrophic (QG) model.