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Fig. 4

image

Total kinetic energy as a function of time Ekin(t) normalized by the total kinetic of the initial state Ekin(0) for the Gresho vortex problem. The solid and dashed lines show the results computed with Apsara and Prometheus, respectively. Curves of different colors correspond to different maximum Mach numbers. In the case of Apsara, these curves are visually indistinguishable.

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