A new blow-up criterion for the 2D full compressible Navier-Stokes equations without heat conduction in a bounded domain (2210.16115v1)

Abstract: This paper is to derive a new blow-up criterion for the 2D full compressible Navier-Stokes equations without heat conduction in terms of the density $\rho$ and the pressure $P$. More precisely, it indicates that in a bounded domain the strong solution exists globally if the norm $|\rho||{{L^\infty(0,t;L^{\infty})}}+||P||{L^{p_0}(0,t;L^\infty)}<\infty$ for some constant $p_0$ satisfying $1<p_0\leq 2$. The boundary condition is imposed as a Navier-slip boundary one and the initial vacuum is permitted. Our result extends previous one which is stated as $|\rho||{{L^\infty(0,t;L^{\infty})}}+||P||{L^{\infty}(0,t;L^\infty)}<\infty$.