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Title: Global well-posedness of the velocity–vorticity-Voigt model of the 3D Navier–Stokes equations
The velocity–vorticity formulation of the 3D Navier–Stokes equations was recently found to give excellent numerical results for flows with strong rotation. In this work, we propose a new regularization of the 3D Navier–Stokes equations, which we call the 3D velocity–vorticity-Voigt (VVV) model, with a Voigt regularization term added to momentum equation in velocity–vorticity form, but with no regularizing term in the vorticity equation. We prove global well-posedness and regularity of this model under periodic boundary conditions. We prove convergence of the model's velocity and vorticity to their counterparts in the 3D Navier–Stokes equations as the Voigt modeling parameter tends to zero. We prove that the curl of the model's velocity converges to the model vorticity (which is solved for directly), as the Voigt modeling parameter tends to zero. Finally, we provide a criterion for finite-time blow-up of the 3D Navier–Stokes equations based on this inviscid regularization.  more » « less
Award ID(s):
1716801
PAR ID:
10114034
Author(s) / Creator(s):
; ;
Date Published:
Journal Name:
Journal of differential equations
Volume:
266
Issue:
5
ISSN:
0022-0396
Page Range / eLocation ID:
2435-2465
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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