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arXiv · 2509.24618

On a Differential Model for Sandpiles Growing in a Silo

Graziano Crasta·Annalisa Malusa
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Abstract

We discuss some features of a boundary value problem for a system of PDEs that describes the growth of a sandpile in a container under the action of a vertical source. In particular, we characterize the long-term behavior of the profiles, and we provide a sufficient condition on the vertical source that guarantees the convergence to the equilibrium in a finite time. We show by counterexamples that a stable configuration may not be reached in a finite time, in general, even if the source is time-independent. Finally, we provide a complete characterization of the equilibrium profiles.

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Graziano Crasta, Annalisa Malusa. 2025-09-29. On a Differential Model for Sandpiles Growing in a Silo. https://doi.org/10.22363/2413-3639-2025-71-4-626-641

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