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arXiv · 2410.24063

Optimal Regularity for the Stokes Equations on a 2D Wedge Domain Subject to Navier Boundary Conditions

Matthias Köhne·Jürgen Saal·Laura Westermann
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Abstract

We consider the Stokes equations subject to Navier boundary conditions on a two-dimensional wedge domain with opening angle $\theta_0 \in (0,\,\pi)$. We prove existence and uniqueness of solutions with optimal regularity in an $L^p$-setting. The results are based on optimal regularity results for the Stokes equations subject to perfect slip boundary conditions on a two-dimensional wedge domain that have been obtained by the authors in [15]. Based on a detailed study of the corresponding trace operator on anisotropic Sobolev-Slobodeckij type function spaces on a two-dimensional wedge domain we are able to generalize the results proved in [15] to the case of inhomogeneous boundary conditions. Existence and uniqueness of solutions to the Stokes equations subject to (inhomogeneous) Navier boundary conditions are then obtained using a perturbation argument.

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Matthias Köhne, Jürgen Saal, Laura Westermann. 2024-10-31. Optimal Regularity for the Stokes Equations on a 2D Wedge Domain Subject to Navier Boundary Conditions. https://arxiv.org/abs/2410.24063

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