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The Magnetorotational Instability Prefers Three Dimensions
Jeffrey S. Oishi, Geoffrey M. Vasil, Morgan Baxter +4
The magnetorotational instability (MRI) occurs when a weak magnetic field destabilises a rotating, electrically conducting fluid with inwardly increasing angular velocity. The MRI…
Dedalus: A Flexible Framework for Numerical Simulations with Spectral Methods
Keaton J. Burns, Geoffrey M. Vasil, Jeffrey S. Oishi +2
Numerical solutions of partial differential equations enable a broad range of scientific research. The Dedalus Project is a flexible, open-source, parallelized computational framew…
The "Sphered Cube": A New Method for the Solution of Partial Differential Equations in Cubical Geometry
Keaton J. Burns, Daniel Lecoanet, Geoffrey M. Vasil +2
A new gridding technique for the solution of partial differential equations in cubical geometry is presented. The method is based on volume penalization, allowing for the impositio…
Predicting the Rossby number in convective experiments
Evan H. Anders, Cathryn M. Manduca, Benjamin P. Brown +2
The Rossby number is a crucial parameter describing the degree of rotational constraint on the convective dynamics in stars and planets. However, it is not an input to computationa…
Breezing through the space environment of Barnard's Star b
Julián D. Alvarado-Gómez, Cecilia Garraffo, Jeremy J. Drake +4
A physically realistic stellar wind model based on Alfvén wave dissipation has been used to simulate the wind from Barnard's Star and to estimate the conditions at the location of…