Special Session 96: Recent Trends in Navier-Stokes Equations, Euler Equations, and Related Problems

Divergence-Free Dual Spaces and $L^p$ Analysis for the Stokes and Navier--Stokes Equations with Mixed Navier-Type Boundary Conditions
Nour Seloula
University of Caen Normandie
France
Co-Author(s):    Imane Boussetouan and Cherif Amrouche
Abstract:
In this talk, we study the stationary Stokes and Navier--Stokes equations in an $L^p$ framework under mixed Navier-type boundary conditions, combining Dirichlet conditions on part of the boundary with prescribed normal trace and tangential vorticity on the complementary part. A central aspect of this work is the precise characterization of the dual spaces associated with divergence-free function spaces adapted to these boundary conditions. This duality framework allows for a rigorous variational formulation beyond the Hilbert setting. As an application, we establish the existence of weak and strong solutions in the $L^p$ theory for both the Stokes and Navier--Stokes systems under these mixed boundary conditions.