[Dottorcomp] Seminari di Matematica Applicata. Martedì 22 giugno, Ulisse Stefanelli

[Stefano Lisini]

Seminari di Matematica Applicata, Dipartimento di Matematica "F.
Casorati" e Istituto del CNR IMATI "E. Magenes" di Pavia,

Martedì 22 giugno 2021, alle ore 15 precise,
Ulisse Stefanelli (Università di Vienna)
terrà un seminario dal titolo:

A variational approach to Navier-Stokes.

Il seminario si terrà su Zoom al link:
https://us02web.zoom.us/j/87518137128?pwd=eHg2eG9QZUdydFJEU1NESWN5a1lPQT09

Abstract.
I will discuss a variational approach to the incompressible
Navier-Stokes system by means of stabilized
Weighted-Inertia-Dissipation-Energy (WIDE) functionals. These are
parameter-dependent functionals on entire trajectories whose
minimization corresponds to an elliptic-in-time regularization of the
system. By passing to the limit in the regularization parameter along
subsequences of WIDE minimizers one recovers classical Leray-Hopf weak
solutions. The tool can also be used as a variational selection
principle in case boundary conditions are not imposed on some parts of
boundaries, representing, e.g., outflows.
This is based on work in collaboration with Michal Bathory, Michael
Ortiz, and Bernd Schmidt.
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Pagina web dei Seminari di Matematica Applicata
https://matematica.unipv.it/ricerca/cicli-di-seminari/seminari-di-matematica-applicata/