The stability of MacCormack's method for the scalar advection equation
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We show that MacCormack's method for the scalar advection equation ut = aux+buy is stable if (aΔt/Δx)2 + (bΔt/Δy)2 ≤ 2 1+18 −2≈18. This bound on the mesh ratios is not optimal, since numerical sampling shows that .3266 will do when (aΔt/Δx)2 = (bΔt/Δy)2.
[1] E. Turkel,et al. Symmetric Hyperbolic Difference Schemes and Matrix Problems , 1977 .
[2] R. Maccormack. The Effect of Viscosity in Hypervelocity Impact Cratering , 1969 .
[3] E. Tadmor,et al. On the Numerical Radius and Its Applications , 1982 .
[4] P. Lax,et al. Difference schemes for hyperbolic equations with high order of accuracy , 1964 .
[5] D. Gottlieb,et al. Phase Error and Stability of Second Order Methods for Hyperbolic Problems. II , 1974 .