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2 documents correspondants.

Prépublication · 2026 arXiv EN

Commutative Coarse-graining on the Sphere

Filtering by spatial convolution underlies coarse-graining and Large Eddy Simulation, the analysis of multiscale dynamics, and data processing across the sciences. Yet, as commonly practiced on the sphere, it violates a basic consistency requirement: commutati...

Chayut Teeraratkul, Hussein Aluie #physics.comp-ph

Prépublication · 2026 arXiv EN

Convergence of Roberts flow dynamos in Eulerian and Lagrangian codes

Standard benchmark tests for numerical magnetohydrodynamics codes focus on one- and two-dimensional problems that ignore the possibility of dynamos, i.e., an exponential instability converting kinetic energy into magnetic energy. They also tend to ignore magne...

Nikyta Shchutskyi, Axel Brandenburg et al. #physics.comp-ph