Geodesic
Mixing and diffusion for rough shear flows
Ars Inveniendi Analytica (2021)

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This article addresses mixing and diffusion properties of passive scalars advected by rough ($C^\alpha$) shear flows. We show that in general, one cannot expect a rough shear flow to increase the rate of inviscid mixing to more than that of a smooth shear without critical points. On the other hand, diffusion may be enhanced at a much faster rate. This shows that in the setting of low regularity, the interplay between inviscid mixing properties and enhanced dissipation is more intricate, and in fact contradicts some of the natural heuristics that are valid in the smooth setting.
Publié le :
DOI : 10.15781/83fc-j334 
@article{10_15781_83fc_j334,
     author = {Maria Colombo and Michele Coti Zelati and Klaus Widmayer},
     title = {Mixing and diffusion for rough shear flows},
     journal = {Ars Inveniendi Analytica},
     publisher = {mathdoc},
     year = {2021},
     doi = {10.15781/83fc-j334},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.15781/83fc-j334/}
}
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Maria Colombo; Michele Coti Zelati; Klaus Widmayer. Mixing and diffusion for rough shear flows. Ars Inveniendi Analytica (2021). doi: 10.15781/83fc-j334

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