Left panel: comparison of the helicity variation rate and the helicity flux integrated through the six boundaries of the domain in the DeVore-Coulomb case. The plotted curves are similar as in Fig. 3. Right panel: magnetic helicity dissipation criterion Cm, Eq. (42), plotted for the practical DeVore (black line) and the DeVore-Coulomb (red line) methods. The inset shows ϵCm, Eq. (44), with the same color convention.
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