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arXiv · 1910.06929

Existence of global weak solutions to the Navier-Stokes equations in weighted spaces

Zachary Bradshaw·Igor Kukavica·Tai-Peng Tsai
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Abstract

We obtain a global existence result for the three-dimensional Navier-Stokes equations with a large class of data allowing growth at spatial infinity. Namely, we show the global existence of suitable weak solutions when the initial data belongs to the weighted space $\mathring M^{2,2}_{\mathcal C}$ introduced in [Z. Bradshaw and I. Kukavica, Existence of suitable weak solutions to the Navier-Stokes equations for intermittent data, J. Math. Fluid Mech. to appear]. This class is strictly larger than currently available spaces of initial data for global existence and includes all locally square integrable discretely self-similar data. We also identify a sub-class of data for which solutions exhibit eventual regularity on a parabolic set in space-time.

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Zachary Bradshaw, Igor Kukavica, Tai-Peng Tsai. 2019-10-15. Existence of global weak solutions to the Navier-Stokes equations in weighted spaces. https://doi.org/10.1007/s00021-019-0462-1

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