187 citations · 1.2k across the 35 of their papers we have counts for
35 papers
The Puzzling Structure of Solar Convection: Window into the Dynamo
Nicholas A. Featherstone, Kyle C. Augustson, Jonathan M. Aurnou +25
The operation of the solar dynamo, with all of its remarkable spatio-temporal ordering, remains an outstanding problem of modern solar physics. A number of mechanisms that might pl…
Gyroscopic polynomials
Abram C. Ellison, Keith Julien
Gyroscopic alignment of a fluid occurs when flow structures align with the rotation axis. This often gives rise to highly spatially anisotropic columnar structures that in combinat…
Small scale quasi-geostrophic convective turbulence at large Rayleigh number
Tobias G. Oliver, Adrienne S. Jacobi, Keith Julien +1
A numerical investigation of an asymptotically reduced model for quasi-geostrophic Rayleigh-Bénard convection is conducted in which the depth-averaged flows are numerically suppres…
Corner cases of the tau method: symmetrically imposing boundary conditions on hypercubes
Keaton J. Burns, Daniel Fortunato, Keith Julien +1
Polynomial spectral methods produce fast, accurate, and flexible solvers for broad ranges of PDEs with one bounded dimension, where the incorporation of general boundary conditions…
Staircase solutions and stability in vertically confined salt-finger convection
Chang Liu, Keith Julien, Edgar Knobloch
Bifurcation analysis of confined salt-finger convection using single-mode equations obtained from a severely truncated Fourier expansion in the horizontal is performed. Strongly no…
Spontaneous suppression of inverse energy cascade in instability-driven 2D turbulence
Adrian van Kan, Benjamin Favier, Keith Julien +1
Instabilities of fluid flows often generate turbulence. Using extensive direct numerical simulations, we study two-dimensional turbulence driven by a wavenumber-localised instabili…