On vanishing diffusivity selection for the advection equation
Analysis of PDEs
2025-07-08 v2
Abstract
We study the advection equation along vector fields singular at the initial time. More precisely, we prove that for divergence-free vector fields in , there exists a unique vanishing diffusivity solution. This class includes the vector field constructed by Depauw, for which there are infinitely many distinct bounded solutions to the advection equation.
Keywords
Cite
@article{arxiv.2411.12910,
title = {On vanishing diffusivity selection for the advection equation},
author = {Giulia Mescolini and Jules Pitcho and Massimo Sorella},
journal= {arXiv preprint arXiv:2411.12910},
year = {2025}
}