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Table 6 Comparison of uniform and adaptive meshes with respect to number of elements and CPU time(s) when achieving 4.84E-6 L2 error of density for the evolution of an isentropic vortex

From: Adaptive local discontinuous Galerkin methods with semi-implicit time discretizations for the Navier-Stokes equations

  Uniform mesh Adaptive mesh Percentage of savings
#elements 669176 67195 89.9%
CPU time(s) 645 191 70.4%