7 papers
Emergent universal statistics in nonequilibrium systems with dynamical scale selection
Vili Heinonen, Abel J. Abraham, Jonasz SÅomka +3
Pattern-forming nonequilibrium systems are ubiquitous in nature, from driven quantum matter and biological life forms to atmospheric and interstellar gases. Identifying universal a…
The Unsteady Taylor--Vortex Dynamo is Fast
Liam O'Connor, Daniel Lecoanet, Geoffrey M. Vasil +6
Astrophysical and geophysical fluids commonly generate organized magnetic fields, despite having enormous magnetic Reynolds numbers and abundant small-scale turbulence. F…
Instability triggered by mixed convection in a thin fluid layer
Florian Rein, Keaton J. Burns, Stefan G. Llewellyn Smith +3
We investigate the convective stability of a thin, infinite fluid layer with a rectangular cross-section, subject to imposed heat fluxes at the top and bottom and fixed temperature…
Steady advection-diffusion in multiply-connected potential flows
Kyle McKee, Keaton Burns
We consider the steady heat transfer between a collection of impermeable obstacles immersed in an incompressible 2D potential flow, when each obstacle has a prescribed boundary tem…
Rapidly Rotating Wall-Mode Convection
Geoffrey M. Vasil, Keaton J. Burns, Daniel Lecoanet +3
In the rapidly rotating limit, we derive a balanced set of reduced equations governing the strongly nonlinear development of the convective wall-mode instability in the interior of…
Fast automated adjoints for spectral PDE solvers
Calum S. Skene, Keaton J. Burns
We present a general and automated approach for computing model gradients for PDE solvers built on sparse spectral methods, and implement this capability in the widely used open-so…