Weak solutions for the α-Euler equations and convergence to Euler

Weak Solutions to the Stationary Incompressible Euler Equations

On Admissibility Criteria for Weak Solutions of the Euler Equations

Abstract. We consider solutions to the Cauchy problem for the incompressible Euler equations satisfying several additional requirements, like the global and local energy inequalities. Using some techniques introduced in an earlier paper we show that, for some bounded compactly supported initial data, none of these admissibility criteria singles out a unique weak solution. As a byproduct we show...

Singular, weak and absent: solutions of the Euler equations

where φ is the angle between the unit vortex line tangent vectors ξ(x−y, t) and ξ(x, t). Some degree of smoothness of the bundle of vortex lines near a potential singularity may result in averting blowup [3]. For simplicity, we’ll discuss Lipschitz continuous cases, although Hölder continuous cases may be analyzed in a similar fashion. We distinguish between the sine-Lipschitz case (i.e. sinφ i...

Weak solutions of the Euler equations: non-uniqueness and dissipation

These notes are based on a series of lectures given at the meeting Journées EDP in Roscoff in June 2015 on recent developments concerning weak solutions of the Euler equations and in particular recent progress concerning the construction of Hölder continuous weak solutions and Onsager’s conjecture.

Convergence of Vortex Methods for Weak Solutions to the 2-D Euler Equations with Vortex Sheet Data

We prove the convergence of vortex blob methods to classical weak solutions for the twodimensional incompressible Euler equations with initial data satisfying the conditions that the vorticity is a finite Radon measure of distinguished sign and the kinetic energy is locally bounded. This includes the important example of vortex sheets. The result is valid as long as the computational grid size ...