Fig. 5From: Adaptive local discontinuous Galerkin methods with semi-implicit time discretizations for the Navier-Stokes equationsL2 errors of density as functions of the final number of elements and CPU time(s) on uniform and adaptive meshes for the evolution of an isentropic vortex. (a) L2 error versus #elements; (b) L2 error versus CPU time(s)Back to article page