Uniqueness criterion of weak solutions for the 3D Navier-Stokes equations

Abstract

In this paper we establish a new uniqueness result of weak solutions for the 3D Navier-Stokes equations. Under assumption that there is not uniqueness of weak solution in singular time, we prove that if two weak solutions $u$ and $v$ of 3D Navier-Stokes equations belong to $L^{\frac{5}{2}}\left(0,T;V\right)$ with the same initial datum, then we get $u=v$. In the class $L^3\left(0,T;V\right)$, we prove that $u-v\in$ $C^0\left(0,T;H\right)$ and $u=v$when $u_0=v_0$.

05 pages

References in corpus (1)

• Effect of hyperviscosity on the Navier-Stokes turbulence